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2012 Caterpillar CT660
Repair: SYSTEM WIRING DIAGRAMS Print Date: 19/11/2016
AIR CONDITIONING

Fig 1: Air Conditioning Circuit (1 of 2)
HOT W/ IGNITION HOT AT MAIN CONTROL RELAY GROUND 
HIGH 
RELAY 2 ENERGIZED ALL TIMES SPLICE 
SPEED 
FUSE  FUSE  PACK 7 
RELAY
BLOCK  BLOCK  (452M)
FUSE 

A
F
8 7
M 87 30 85 86 87 87A 30 85 86
10A

11­GBB
A50­G
WHT

WHT
FUSE  FUSE 

D1

C1

J1

G1
LT GRN C2

PNK D2

LT GRN G2

LT GRN H2

J2
L G RIGHT SIDE 
LT GRN 30A 20A
A75BC
GROUND CAB 

A75A

A75F

A75­G
WHT
A13­GT

A75T

WHT
LT GRN

A13BH

LT GRN

LT GRN
A75H
A75
A75BL
STUD
11­G1 WHT

A75A
LT GRN
LT GRN
LT GRN
LT GRN
1

A75
A75
LT GRN
2
RIGHT SIDE CAB  LT GRN
3
GROUND STUD LT GRN
4
WHT A11­GB
A77R LT GRN J2 86

A50­G WHT G1
85
A WHT A11­GBA
A77F LT GRN J1 30

B WHT A75­G
C A77C LT GRN H2 87A
GROUND SPLICE 
2
PACK 6 
(458M) AIR CONDITIONING 
RELAY
86 B2 LT GRN A77W

A1 WHT A75­G K77E LT GRN B NCA

85 K77AE LT GRN

30
B1 LT GRN A77T K77­G WHT A NCA
C
FREON 
GROUND ADAPTER 
COMPRESSOR
A2 LT GRN A77H (6704B)
87
LT GRN

A/C CONTROL  A WHT WHT HARNESS 

RELAY K10­GB K10­GA GROUND

LT GRN
5
1 LT GRN A75BP LT GRN
6
2 A75N LT GRN A
MH
3 LT GRN A75BE A75H LT GRN C
4 A75H LT GRN
H
5 A75BH LT GRN D
ML
6 LT GRN A75BF A75B LT GRN E
C
7 LT GRN A75BG
INTERIOR  BLOWER CONTROL
8 DK BLU A62P LIGHTS 
9 LT GRN A75BR SYSTEM A75N LT GRN F2 86
10 PNK A13BH
11 LT GRN A77W A75­G WHT E1
12 WHT A75­GL 85
A75D LT GRN F1
HVAC CONTROL 30
LT GRN

7 WHT A75­GK
8 LT GRN A75BG A75M LT GRN E2 87A
10 LT GRN A75BM
MEDIUM HIGH 
A75C

RECIRCULATION MOTOR SPEED RELAY

C WHT A75­GM

A LT GRN A75BK

B LT GRN A75BF

AIR DISTRIBUTION MOTOR LT GRN
7
WHT
8
161M
C

LT GRN
1060M
161M

162F

75F
B

B
F

(NOT USED)
LT GRN

LT GRN

LT GRN

LT GRN
A75M
75BH

A75C

161M
75T

C A B
WHT A11­GBA

LT GRN

LT GRN

LT GRN

LT GRN
WHT A75­G
WHT A75­G
WHT A75­G

A75H
A75T

WHT
75­G
75F
A75
NCA

NCA

NCA

NCA

NCA
LT GRN
A75­GF

WHT A11­GB

3 5 4 1 2
NCA

NCA

NCA

NCA

NCA
A

GROUND 
SPLICE 
LEFT SIDE  RIGHT SIDE 
CAB GROUND  CAB GROUND 
PACK  M
(458M)
STUD STUD
RESISTOR BLOCK BLOWER MOTOR
370388

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Fig 2: Air Conditioning Circuit (2 of 2)
HOT AT HOT W/ IGNITION ECM HOT W/ IGNITION
ALL TIMES RELAY ENERGIZED RELAY ENERGIZED
FUSE  FUSE  FUSE 
BLOCK 11 BLOCK  BLOCK 1
FUSE  FUSE  FUSE 
4
G M M

K23B TAN 27

6019
10A 15A 5A

VIO 36

TAN
TAN

PNK
A77T

VIO
LT GRN

K13D4
A97CL

K23AD
(OR K23AC)
(OR K23M)
A97AH
THERMAL 
SWITCH
LT GRN A77H LT GRN C 77B LT GRN 2
1

K23C

TAN
LT GRN LT GRN 1
2
LT GRN A77F LT GRN E 77F
3
LT GRN A77R LT GRN D
4
162F
CLUTCH SWITCH
W/ AC & 
B VIO A97CL W/O FAN OVERRIDE, 
APADS & REMOTE  A
77C LT GRN 77P LT GRN NCA
CONDENSOR
A VIO A97AH R
190 LT GRN 77R
W/ FAN  77E LT GRN B NCA
LEFT SIDE CAB 
OVERDRIVE & 
GROUND STUD
W/O AC LOW PRESSURE 
A WHT A11­GFS WHT A11­GF SAFETY SWITCH

K WHT A62­GFO 77N LT GRN A NCA

GROUND SPLICE 
PACK 3 (456M) K 2
W/ AC, FAN OVERRIDE &  77J LT GRN B NCA
8 WHT A62­GFO W/O APADS & 
INTERIOR  REMOTE CONDENSOR HIGH PRESSURE 
10 DK BLU A62FO SAFETY SWITCH
LIGHTS 
K23B

K23B
TAN

TAN
9 WHT A23­GL SYSTEM K23T TAN
B
2 TAN A23A J TAN A23A K23T TAN
2 K23AC TAN
3 TAN A23B TAN K23B
K23C TAN A
FAN OVERRIDE  K23C TAN
SWITCH AC PRESSURE 
W/ AC, FAN OVERRIDE &  W/ AIR CONDITIONING, 
LT GRN SWITCH
W/ O APADS,  REMOTE CONDENSOR & 
5
LT GRN REMOTE CONDENSER W/ AIR CONDITIONING,  W/O APADS
6
REMOTE CONDENSOR &  K23C TAN A
W/O APADS
W/ AC, APADS, 
W/O FAN OVERRIDE K23AC TAN B

REMOTE AC 
CONDENSER

K23AC (OR K23AD) TAN A

K77AE LT GRN B

APADS
(IF EQUIPPED)

A LT GRN A75BE A 75BE LT GRN A

1060M 1060M
75­GL NCA B

75BJ NCA C

CAB STEPPER 
MOTOR

75­GL NCA A

LT GRN A LT GRN 75BJ 75BJ NCA B

7
WHT 162F WHT 75­G
8
75­GL

(NOT  B 75K LT GRN C

WHT

K WHT A23­GL USED) 162F

BUNK STEPPER 
MOTOR
A WHT A11GV
161M
D

SPLICE 
PACK 
(450M)
K WHT A11GV
11­GRD

A75­G

A WHT A11­GU
11­G

GROUND 
WHT

WHT

ADAPTER 
(451M)
K WHT A11­GU A F
WHT

A WHT A11­GRE WHT A11­G

RIGHT CAB  GROUND 
GROUND SPLICE  SPLICE 
RIGHT SIDE CAB  GROUND STUD
PACK 5 (457M) PACK 4 
GROUND STUD
(453M)
370389

 
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ANTI­LOCK BRAKES

Fig 1: Anti­lock Brakes Circuit (1 of 3)
(IF EQIPPED)
BENDIX AUTO 
HOT IN ON HOT AT HOT AT
OR START ALL TIMES ALL TIMES TRACTION CONTROL
FUSE  FUSE  FUSE 
A94­GA WHT B
BLOCK 8 BLOCK  BLOCK 
11 7 A94­GL2 WHT E
FUSE  FUSE  FUSE 
L F C

NCA 2

NCA 1
5A 20A 20A A11­G1 WHT A11­GY WHT A
A94­GL GRY F
LEFT SIDE 
CAB GROUND STUD GROUND 

1
2
ADAPTOR 

A70BB
GRY
A94KA

ORG

ORG
A70
(454M)

N94BM
GRY

GRY
N94BN
BLINK CODE SWITCH
A94­GL GRY
1 WHT A94­GA
GROUND
2
3 GRY A94KA A94H GRY
IGNITION
4 GRY A94BM 14
TCV (DA)
5 GRY A94BN 15
TCV CMN(DA)
6 GRY A94BE 1701F 1701 GRY
1
7 GRN A5N (­) COMPUTER 
J1939 LO
8 YEL A5L (+) DATA LINES 
J1939 HI SYSTEM
9
10 GRY A94BH GRY
WSS DR+ 2
11 GRY A94BF GRY
WSS DR­ 3
12 WHT A94­GL2
GND
13 BLK A98C (­) COMPUTER 
J1587 (B)/J1708(­)
14 BLK A98A (+) DATA LINES 
J1587 (A)/J1708(+) SYSTEM
15
16 GRY A94P GRY
BATTERY 4
17
18 GRY A94H
1348

1 GRY A94LB GRY

PMV SA LEFT HLD 5
2 GRY A94L GRY
PMV SA LEFT REL 6
3 GRY A94LA GRY
PMV SA LEFT CMN 7
4 GRY A94RD GRY
PMV SA RIGHT HLD 8
5 GRY A94LD GRY
WSS SA LEFT (+) 9
6 GRY A94RA GRY
PMV SA RIGHT CMN 10
7 GRY A94R GRY
PMV SA RIGHT REL 11
8 GRY A94LC GRY
WSS SA LEFT (­) 12
9 GRY A94BK
PMV DA RIGHT CMN
10 GRY A94BL
PMV DA RIGHT HLD
11 GRY A94RD GRY
WSS SA RIGHT (­) 13
12 GRY A94BB
PMV DA LEFT CMN
13 GRY A94BJ
PMV DA RIGHT REL
14 GRY A94RC GRY
WSS SA RIGHT (+) 14
15 GRY A94BE
WSS DA LEFT (+)
16 GRY A94BC
PMV DA LEFT HLD
17 GRY A94BA
PMV DA LEFT REL
18 GRY A94BD
WSS DA LEFT (­)
1349
1
2
3 GRY A94SK
4
5 GRY A94SJ
6
7
8 GRY A94SS
9
10
11
12
13
14 1701F
15
17

16

23

25

24

1360
21

20

22

ABS CONTROL MODULE
1701

1 GRY N94SJ 49
A11­GB

2 GRY N94SK 69
A11­GB

1701 1701F
N94BA

GRY N94BC

GRY N94BB

N94BK

MD LSM AIR VALVE BACKSHELL 
N94BL
N94BJ

(W/O ROLL OVER STABILITY) 
WHT

GRY N94BD

GRY N94BE

SS ABS ADV AIR VALVE
WHT

(W/ ROLL OVER STABILITY)
GRY

GRY

GRY
A GRY

NCA J ORG A70

A11­GS

C
A

B
A70BA

A70BB

A94SS

1
2

NCA 1M ORG A70A

NCA

NCA

NCA
NCA

C NCA

NCA
WHT
ORG

ORG

GRY
D ORG A70BA

RIGHT SIDE CAB 
BLK

BLK
ORG A70A

STOP SWITCH GROUND STUD
C
A

B
E2

F1

F2

E1
30

85
87

86
A

LEFT REAR  RIGHT REAR 
LEFT REAR  MODULATOR
MODULATOR
STOP LIGHT  WHEEL SPEED 
SPLICE PACK STOP LIGHT RELAY SENSOR
370391

Fig 2: Anti­lock Brakes Circuit (2 of 3)
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Fig 2: Anti­lock Brakes Circuit (2 of 3)
RIGHT REAR 
WHEEL SPEED 
HOT AT
SENSOR
ALL TIMES
FUSE 
BLOCK 10
FUSE 
E
30A

BLK

BLK
1

GRY 2
N94BF

A94P
GRY
N94BH
GRY

1701
1701F
18

19
GRY A94BE GRY
1 1

GRY A94BH
2
GRY A94BF WHT
3 2

GRY
4

GRY A94LB
5
GRY A94L A11­GVB WHT C
6
GRY A94LA A11­GV WHT A
7
GRY A94RD
8 GROUND ADAPTER 
GRY A94LD (450M)
9
GRY A94RA
10
GRY A94R A11­GV WHT K
11
GRY A94LC A11­GU WHT A
12
GROUND ADAPTER 
(451M)
GRY A94RD
13
A11­GU WHT K
A11­G WHT A11­GRE WHT A
GRY A94RC
14 GROUND ADAPTER 
RIGHT CAB 
(457M)
GROUND STUD
3M

1M

3M

1M
Q

Q
D

R
E

S
1

1
3

3
M94RC

M94RD

M94LD

M94LC
GRY

GRY

GRY

GRY

M94RA

M94RB

M94LA

M94LB
M94R

M94L
GRY

GRY

GRY

GRY

GRY

GRY
1

C
A

A
NCA

NCA

NCA

NCA

NCA

NCA

NCA

NCA

NCA

NCA
C

C
A

ABS RIGHT FRONT  ABS LEFT FRONT 
WHEEL SPEED SENSOR WHEEL SPEED 
SENSOR ABS RIGHT  ABS LEFT FRONT 
FRONT MODULATOR MODULATOR

370392

Fig 3: Anti­lock Brakes Circuit (3 of 3)
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Fig 3: Anti­lock Brakes Circuit (3 of 3)

A11­GF WHT A11­GFS WHT A

A94­GBF GRY H
LEFT SIDE 
GROUND STUD SPLICE ADAPTER 
(456M)

A62TC DK BLU 10
INTERIOR 
LIGHTS 
SYSTEM A94­GTC LT GRN 8
A94­GBF GRY 2

1
GRY A94BE GRY 3
1
(NOT USED) 7

WHT A11­GVB WHT 9

2

AUTOMATIC TRACTION 
CONTROL SWITCH

A GRY N94SZC
C GRY N94SH W/O ROLL OVER STABILITY A94SZD GRY
GRY N94SVC 60 A94SZC GRY A94SZ GRY 1
B
GRY N94SZC A94SE GRY 2
MD ABS ADV 
GRY N94SH 62 A94SH GRY 3
3RD TRANSDUCER
GRY N94SVC 61 A94SVC GRY A94SV GRY 4
A GRY N94SZC 1701 1701F A94SVD GRY
C GRY N94SH A94SVD GRY
W/ ROLL OVER STABILITY
B GRY N94SVC

RSP TRANSDUCER 
(W/ 4X4) 
REAR RSP TRANSDUCER
(W/ 6X6 & 6X4) W/ M­NGV­ 
RH­HDD

A94SF GRY 5
C BRN N94SE 36 GRY A94SL GRY 6
B WHT N94SV2 A94SDA GRY 7
A DK BLU N94SZ2 A94SCA GRY 8
A94SM GRY 9
ABS SECONDARY AIR 
A94SBA GRY 10
TRANSDUCER
A94SAA GRY 11
A94SN GRY 12
1361
C ORG N94SF 37 GRY ABS CONTROL MODULE
B LT GRN N94SV1 N94SVD GRY 39 A94SVD GRY
A94SVD GRY
A YEL N94SZ1 N94SZD GRY 32 A94SZD GRY
1701 1701F A94SZD GRY
ABS PRIMARY AIR 
TRANSDUCER

C BRN N94SL 33 GRY

A BLK N94SM 35 GRY
B RED N94SN 38 GRY
1701 1701F
TRAILER MODULATOR VALVE
(W/ ROLL OVER 
STABILITY)  A94SAA GRY A
MD LSM 5TH TRANSDUCER A94SBA GRY G
(W/O ROLL OVER 
A94SCA GRY D
STABILITY)
A94SDA GRY K
1 GRY N94SAB 54 A94SAB GRY B
2 GRY N94SCB 55 A94SCB GRY E
3 GRY N94SBB 56 A94SBB GRY H
4 GRY N94SDB 57 A94SDB GRY L
1701 1701F
SS/MD RSM YAW SENSOR

1 GRY B94SC 3 A94SC GRY F

2 GRY B94SA 2 A94SA GRY C
3 GRY B94SB 1 A94SB GRY J
4 GRY B94SD 4 A94SD GRY M
1700
STEERING WHEEL  ABS ESP/RSP 
POSITION SENSOR ADAPTER

370393

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BODY BUILDER SYSTEMS

Fig 1: Body Builder Circuit (1 of 2)
HOT AT HOT AT
ALL TIMES ALL TIMES
BODY TAIL RELAY
FUSE 
BLOCK 5

FUSE  FUSE  FUSE  FUSE 

H G C L
87 30 85 86 20A 20A 30 20A

B1

A1
B2

A2

NCA

ORG
BRN

BRN

BRN

BRN

BRN
RED
TAN

A68BB

A13GE

A70BBV

A54BBV

A57BBV
A68BBU

A68BBU
A54BBC
A68BBC
EXTERIOR 
LIGHTS 
SYSTEM

A57BB ORG
1
A57BC ORG
2
ORG
3

A BRN N68BB 71 BRN

BRN N68BB
B YEL N56BB 12 ORG A56BB ORG
4
YEL N56BB
C LT GRN N57BB 63 ORG BRN
5
LT GRN N57BB
D BRN N54BB 74 BRN A54BB BRN
6
BRN N54BB BRN
7
E LT BLU N71BB 73 LT BLU A71BB NCA
8
LT BLU N71BB
F LT BLU N12BB 75 LT BLU A12BB LT BLU
9
LT BLU 1701F 1701 ORG
10
G WHT N11­GD N12BB
4450M
A BRN R68BB A

B ORG R56BB B

C ORG R57BB C
LT BLU
11
D BRN R58BB D
NCA
12
E ORG R71BB E

F LT BLU R12BB F

G WHT R11­GBB G
4460BM 4450BF 4460BM
A YEL N56BC 42 ORG A56BC ORG
13

B LT GRN N57BC 64 ORG

C RED N70BB 72 RED

4460M 1701F 1701
A ORG R56BC A YEL N56BC

B ORG R57BC B LT GRN N57BC

C ORG R70BB C RED N70BB

4450BM 4460CA 4450BM
R11­GBB

BODY BUILDER 
N11­GD

CONNECTOR
WHT
WHT
F

CHASSIS 
A70A
A70BBC

A70BBV

A70
A70BB
A11GJ

GROUND 
SPLICE PACK 
(8807)
ORG

ORG
A

A70BBC
NCA

RED

RED

RED

GROUND 
A70A

DISTRIBUTION 
GRY N11­GA

SYSTEM
M
C1

D2

D1

C2
N11­GB

ORG
RED

NCA

NCA
GRY

86 85 30 87
A
F

BODY STOP RELAY STOP LIGHT 
SPLICE PACK STOP SWITCH
GROUND
370438 (AT DASH)

Fig 2: Body Builder Circuit (2 of 2)
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Fig 2: Body Builder Circuit (2 of 2)

HOT AT HOT W/ ACCESSORY HOT AT HOT AT HOT AT

ALL TIMES RELAY ENERGIZED ALL TIMES ALL TIMES ALL TIMES A11­GV (OR A11­GU) WHT A
FUSE  FUSE  FUSE  FUSE  A11­GV WHT K

K
BLOCK 11 FUSE  BLOCK 4 FUSE  BLOCK 5 FUSE  FUSE  FUSE  BLOCK 7
GROUND 
F F M H D ADAPTER  GROUND ADAPTER (451M)
20A 5A 20A 20A 20A (457M)
A11­GV WHT A

A
A11­GW WHT K

A11­GRE
WHT
GROUND ADAPTER (450M)

ORG

ORG
LT BLU

LT BLU

LT BLU
A11­GW WHT A
A11­GX WHT K

A56BBV
A70

A12BBC

A12BBV

A71BBV
GROUND ADAPTER (449M)

WHT
A11­G
A11­GX WHT A
RIGHT SIDE  A11GJ WHT C
CAB GROUND STUD
GROUND ADAPTER (448M)

ORG A57BB ORG E2 87

1
ORG A57BC ORG
2 30
ORG A57BBV ORG F1
3

A56BBC ORG F2 85

A11GJ NCA E1
86
BODY RIGHT 
TURN RELAY

ORG A54BB BRN A2 87

4

A54BBV BRN 30
BRN B1
5

BRN
6
BRN A54BBC BRN B2 85
7
NCA A11GJ NCA A1
8
A11GJ NCA
LT BLU A11GJ NCA 86
9
ORG A11GJ WHT BODY MARKER 
10 RELAY

EXTERIOR  A71B ORG D2

LIGHTS  A71A ORG 87
SYSTEM A71AC ORG
A71BBV LT BLU 30
D1

LT BLU A71BB LT BLU C2 85

11

NCA A13GE NCA A13GE NCA C1

12
AF13GE NCA 86
BODY BACKUP 
LIGHT RELAY

H K71A ORG B
2M 2 ORG K71A
ORG D REVERSE 
13
RIGHT TURN  LIGHT
TRANSMISSIONS 
FROM RELAY 
SYSTEM
SPLICE PACK

A A57B ORG A2
A5A ORG
EXTERIOR LIGHTS SYSTEM
RIGHT TURN 
RELAY

EXTERIOR 
LIGHTS 
SYSTEM
A13GE WHT J

A11­GBA WHT A
A56BBC

A56BBC
A56BBV
A56BC
A56BB
A11GJ

GROUND 
A56B

A56B
A56A
AF13GE

ADAPTER 
A12BBC

A12BBV

A12BB

(458M)
LT BLU

LT BLU

LT BLU

ORG

ORG
ORG
ORG

ORG

ORG

ORG
ORG
NCA
NCA

A11­GB
WHT
G2
G1

H2

H1
E1

F2

F1

E2

A4
D

86 85 30 87 86 85 30 87
RIGHT SIDE 
LEFT TURN  CAB GROUND 
FROM RELAY  STUD
SPLICE PACK LEFT TURN 
BODY ACCESSORY RELAY BODY LEFT TURN RELAY RELAY

370439

Fig 3: Body Builder Systems Circuit
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Fig 3: Body Builder Systems Circuit
HOT W/ IGNITION HOT AT HOT W/ IGNITION
RELAY ENERGIZED ALL TIMES RELAY ENERGIZED
FUSE  ECM  FUSE 
FUSE  BLOCK 4 FUSE FUSE  BLOCK 1
MANUAL TRANSMISSION  L 25A C
1
ALLISON TRANSMISSION 10A 15A
2

B
VECHICAL 

K14K
RED
SPEED SENSOR

A13EM
PNK

VIO
B GRY

A97CR
K47A

A GRY
1
K47 GRY (OR PPL)
GRY (OR PPL)

2M
B PPL K97AK

P
A PPL K97JA

K14M
VIO K97AJ1

RED
SPEED SENSOR TRANSMISSIONS SYSTEM
A11­G WHT

RIGHT SIDE 
CAB GND STUD
12 GRY (OR PPL) K47 (OR K97JA)
VSS­H
13 GRY (OR PPL) K47A (OR K97AK) A11­GRE WHT A
VSS­L
ENGINE SENSOR  A11­GU WHT K
INTERFACE 
GROUND 
BATTERY  ADAPTER (457M)
NEGATIVE 
(9256) A11­GU WHT A
WHT K10WH5
A11GVC WHT D

SPLICE 
PACK (451M)

E VIO A99­GD
D VIO A99D5V
A VIO A99­G 7
C VIO A99AV A11GVC WHT 9
F VIO A99D A97AE VIO 3
B VIO A99
A97CRC PPL 2
THROTTLE POSITION  1
SENSOR (267M)

A62CRA DK BLU 10
A62GCS DK BLU 8
190M
O
C

N
B
A
P

CRUISE BRAKE 
190

ON/OFF 
SWITCH

A11­G WHT
54 PPL K99
APS1
55 PPL K99D LEFT SIDE 
APS2 GND STUD
6019 DK BLU A62 INTERIOR LIGHTS 
36 PPL K99A5V SYSTEM
APS1 5V
23 PPL K99­G 7
APS1 GND
50 PPL K99D5V 9
APS2 5V
11 PPL K99­GD A97AB VIO 3
APS2 GND
6018
22 PPL K97AE A97CRB PPL 2
6019 A97AA VIO 1
2 WHT K92A16
GND
190M

17 PNK K13D A62CRB DK BLU 10

KEY PWR
34 YEL K5S(+) A62GCR DK BLU 8
J1939 (+) COMPUTER 
I
K

190

DATA LINES 
47 GRN K5S(­) SYSTEM CRUISE BRAKE 
J1939 (­)
6018 SET/RESUME 
SWITCH
1 RED K14M
BATT (+)
W/ CRUISE & 
W/O REMOTE PPL KP7AA A11GFS WHT
23 PPL (OR VIO) KP7AA (OR KP7CA) (OR K97BA) PPL KP7AB
52 PPL (OR VIO) KP7AB (OR KP7CB) (OR K97BB) PPL (OR VIO) KP7CA (OR K97BA) LEFT SIDE 
2 WHT K92D16 PPL (OR VIO) GROUND STUD
GND W/ REMOTE 
6019 CRUISE
(OR KP7CB)

BOSCH ECM
K97BB
K92B16

K97GG

K97GG
K97BA
C PPL (OR VIO)
TAN

VIO
A VIO

B VIO

BATTERY  CAB 
NEGATIVE  GROUND
(9256)

370394 REMOTE CRUISE

 
 
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COMPUTER DATA LINES

Fig 1: Computer Data Lines Circuit
HOT AT
ALL TIMES
FUSE  A5J(­) YEL D
FUSE  BLOCK 10 A5J(­) YEL C
K A5J(+) YEL J
20A
A5J(+) YEL K
WHT A11­GD A5(+) YEL G
A5(­) GRN F

A97DL
LEFT SIDE CAB  A5N(+) YEL H

VIO
GROUND STUD A5N(­) E
GRN
A5R(­) GRN A
A WHT A11­GR A5R(+) YEL M
B VIO A97DL A5S(­) GRN B
C YEL A5D(+) A5S(+) YEL L
D LT GRN A5D(­)
E J1939 SPLICE PACK (1025)
F BLK A98A(+)
G BLK A98C(­) A5S(+) YEL C

YEL A5A(+)

LT GRN A5A(­)
DIAGNOSTIC 
DATA LINK A5S(­) GRN D

XMSN CONTROL MODULE

A5R(+) YEL A

13 BLK A98C(­)
POSITIVE
14 BLK A98A(+) A5R(­) GRN C
NEGATIVE
8 YEL A5N(+) 203
J1939 
7 GRN A5N(­) TERMINATING 
1348 RESISTOR
ABS ECU CONN 1
A5C(+) YEL 12

A5C(­) LT GRN 13
421M
CLUSTER
M YEL A5B(+)
A LT GRN A5B(­)
G YEL A5E(+) A5F(+) YEL B M5F(+) YEL A
J YEL A5K(+) A5F(­) GRN C M5F(­) GRN C
K YEL A5K(+) 3
J1939 BACKBONE
D LT GRN A5K(­)
C LT GRN A5K(­) A5M(+) YEL 5
F LT GRN A5E(­) A5M(­) GRN 6

MSM 1 MODULE
J1939 SPLICE 
PACK (1026)

2 GRN K5V(­)
J1939(­)
3 YEL K5V(+)
J1939(+)
7105
EATON GEN3  YEL K5R(+) G
TCM (NOT  K5TB(+) YEL A
USED)
GRN K5R(­) H
190
YEL K5S(+) YEL K5TA(+) K5TB(­) GRN C
W/ AUTO TRANSMISSION &  7110
ULTRASHIFT TRANSMISSION J1939 
GRN K5S(­) GRN K5TA(­) TERMINATING RESISTOR

YEL K5S(+) YEL K5TA(+) K5V(+) YEL K5VA(+) YEL 67

CAT CX31 
TRANSMISSION
GRN K5S(­) GRN K5TA(­) K5V(­) LT GRN K5VA(­) LT GRN 68
34 YEL K5S(+) (OR K98YL2) 1268
J1939(+) 70 WAY CAT 
K5R(+)

K5R(­)

TCM
47 GRN K5S(­) (OR K98GN2) K5TB(­) GRN C
J1939(­)
6018 YEL K98YL2
ECM
GRN
YEL

W/ ALLISON 
TRANSMISSION GRN K98GN2 K5TB(+) YEL A
190

7110
G

J1939 
YEL K5S(+) (NOT  TERMINATING RESISTOR
USED)
M/T
GRN K5S(­) K108 GRN 8

C GRN K5TB(­) K98YL3 YEL K128 YEL 28

ALLISION XMSN 
K98GN3 GRN
CONTROL MODULE
A YEL K5TB(+)
7110
GRN K98GN1

J1939 
YEL K98YL1

K98YL3(+) YEL A
YEL K5R(+)

GRN K5R(­)

TERMINATING 
K98GN1(­)

K98YL1(+)

RESISTOR
K98GN4

K98YL4

K98GN3(­) GRN C
190

1099
G

G
H

GRN
GRN

TERMINATING 
YEL

YEL

(NOT USED) (NOT USED) RESISTOR

A YEL K98YL5
J1939(+)
10 9 100F
B GRN K98GN5
J1939(­) ENGINE 
BULKHEAD 
J1939 ALLISION  MATING 
DIAGNOSTIC CONNECTOR CONNECTOR

370417

 
 
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COOLING FAN

Fig 1: Cooling Fan Circuit

HOT W/
IGNITION RELAY
ENERGIZED
FUSE 
FUSE  BLOCK 4
L
10A

B3

PNK A13ECM

K23 TAN A NCA

A WHT K34­GA
K23­G WHT B NCA
D TAN K23B1
FAN SOLENOID
ECM 0V SPLICE (6707)
COMPUTER  K98GN GRN 35
CAN L
DATA LINES  K98YL YEL 48
SYSTEM CAN H
B TAN K34BB
A TAN K34BA P K13D PNK 17
KEYPWR
D TAN K23A1 2 K34­GA WHT 8
FSS GND
K34BB TAN 49
ECM 5V SPLICE (6706) FSS 5V
K34BA TAN 37
REMP1 5V

1 TAN K23­G K23­G WHT 2 TAN

2 TAN K23A1 K23 TAN K23­G (OR WHT) 18
EFAN
3 TAN K23 K23­G TAN K23 TAN 30
EFAN 12V
4 TAN K23B1 K23 TAN
1
5 TAN K23C K23C TAN 58
FSS
K92BA16 WHT 4
GND
VARIABLE  6018
SPEED FAN
ECM
1 W/ VARIABLE SPEED FAN 
2 W/ 2 SPEED FAN K92B16 TAN

BATTERY GROUND (9256)
8 TAN K21B3 K21B3 TAN 19
CSRD
6 TAN K21B1 K21B1 TAN 21
CSRE
7 TAN K21B2 K21B2 TAN 20
CSRC
1 TAN K21A1
ECM SENSOR 
2 TAN K21A2
INTERFACE
3 RED K14A1 BLU K21­FL
K21A1 TAN
FLAME START RELAY K21A2 TAN
BLU K21­FL

FLAME START 
GLOW PLUG
FLAME START 
BATTERY POWER

370390

 
 
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ENGINE ACCESSORIES

Fig 1: After Treatment Circuit

HOT W/ IGN RELAY A11­GB WHT RIGHT SIDE CAB 

ENERGIZED GROUND STUD
FUSE 
FUSE  BLOCK 1
G A11­GBA WHT A
10A
A95­G WHT K
TAN

GROUND ADAPTER (458M)
A95E TAN 2
A95­GC WHT 1
A95

7 TAN A95A A95BA TAN 3

SWITCHED IGN
5 YEL A5M(+) COMPUTER  A95FA TAN 9
CAN +
6 GRN A5M(­) DATA LINES  INTERIOR  A62PR DK BLU 10
CAN ­ SYSTEM
3 TAN A95E LIGHTS  A62­GMS DK BLU 8
INPUT 2 SYSTEM
8 WHT A95­GA
GROUND PARKED REGEN SWITCH
2 TAN A95N
1406 A62­GMS DK BLU B
5 TAN A95IR A11­GF WHT A11­GFS WHT A
OUTPUT 12
4 TAN A95FA
OUTPUT 9
1407 LEFT SIDE  GROUND ADAPTER (456M)
CAB GROUND STUD
MSM MODULE  A95IR TAN 1

RIGHT SIDE  A95N TAN 5

CAB GROUND STUD INTERIOR LIGHTS  A62MSP DK BLU 10
SYSTEM
A11­G WHT WHT A K WHT A G A11­GUF WHT 9
A11­GRE A11­GU
GROUND  (OR A11­GV) GROUND  IGHIBIT REGEN 
ADAPTER (457M) ADAPTER (451M) SWITCH
370436

Fig 2: Air Dryer Circuit

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HOT AT ALL TIMES HOT W/ IGN RELAY 2
FUSE 
FUSE  ENERGIZED
BLOCK 10 FUSE 
F FUSE 
15A BLOCK 8
D
10A

GRY
A39V

GRY
A39A
AIR DRYER  HEATED DRAIN 
RELAY VALVE
40 39A GRY A NCA
30 GRY A39V 1701

86 NCA 39­GF WHT B NCA

85 PNK A13­GAD 67 1701 A13­GAD PNK D

87 GRY A39B A11­GBA WHT A

GROUND 
A GRY N19 31 1701 ADAPTER (458M)
B WHT N19­G
39­GB

A11­GB WHT

11­GA
39B

FUEL HEATER
F WHT N19­G RIGHT SIDE CAB 
WHT
GRY

GROUND STUD
C WHT
D WHT
GRY

A WHT F A GRY
B
A

N59­G N11­GB GROUND

A

AIR  (AT DASH)
CLASSIS GROUND 
SOLENOID 
SPLICE PACK 
GROUND  GROUND
(8809)
SPLICE  (AT DASH) CLASSIS GROUND 
(8805) LEFT SIDE  SPLICE PACK 
AIR DRYER (8807)
370434

Fig 3: Engine Brake Circuit

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HOT W/ IGN RELAY HOT W/ IGN RELAY 2
ENERGIZED ENERGIZED
FUSE  FUSE 
FUSE  FUSE 
BLOCK 1 BLOCK 8
F H
5A 15A

A97ALV VIO
A44V GRY

A24AM GRY
C GRY A44V 5

D VIO A44EC
A24AM GRY 2
PARK BRAKE 
SWITCH
A24AD GRY 3
WHT M97­GF H 6
A11­GVA WHT 9

VIO M97AL L VIO A97AL

A62­GEB DK BLU 8
CRUISE SWITCH

33 PPL K97AL F K62EB DK BLU 10

BNO1
39 GRY K44EC V
PB­SW
40 GRY K24AE M
EB_SW1 ENGINE BRAKE 
53 GRY K24AF L ON/OFF SWITCH
EB_SW2 INTERIOR 
6019 190 190­M LIGHTS SYSTEM
ECM
B WHT A11­GVA A62­GEB DK BLU F
A WHT A11­GV A62­GL WHT G
A11­GFS WHT A
GROUND 
ADAPTER (450M) GROUND 
ADAPTER 
K WHT A11­GV (456M)
A WHT A11­GU (OR A11­GV)
A11­GF WHT
GROUND 
ADAPTER (451M)
A11­GU LEFT SIDE 
K WHT (OR A11­GV) GROUND STUD

A WHT A11­GRE INTERIOR 

LIGHTS SYSTEM
10 DK BLU
A62­GL
A24AD

GROUND 
A24AE

A62ES
A24AF

WHT
GRY

GRY

GRY

ADAPTER (457M)
3

8
6

WHT A11­G

RIGHT SIDE 
CAB GROUND STUD

370435 ENGINE BRAKE SELECTOR SWITCH

 
 

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ENGINE PERFORMANCE

Fig 1: Engine Performance Circuit (1 of 4)
HOT W/
1 W/ 2 SPEED FAN  IGNITION RELAY HOT AT
ENERGIZED ALL TIMES FAN SOLENOID
2 W/ VARIABLE SPEED FAN FUSE  ECM 
BLOCK 4 FUSE
FUSE L 25A
WHT 10A
N14­GA

RED B
N14­GF

9260
WHT

N14A

NCA

NCA
A

A13EM
PNK
1266

9261

A
A

K23­G
WHT

TAN
K23
K14C 1267
BATTERY 

K10WH5
GROUND

RED
WHT
RED
1
1 RED K14G WHT
B+ 2
2 WHT K92A16
GND

K14H
RED
K92B16
TAN

3 RED K14HA
B+
4 WHT K92BA16 WHT K92D16
GND

K14K
RED
RED K14M
5 RED K14KA
B+
6 WHT K92C16
GND

K14L
RED
7
8 WHT K34­GA
FSS GND
9 WHT K41­GA WHT
IAT GND 3
10 WHT K95­GC WHT
EGT3 GND 4
11 PPL K99­GD PPL
APS2 GND 5
12 TAN K95E TAN
EGDP 6
13
14
15 TAN K41A TAN
IAT 7
16 TAN K95B TAN
EGT2 8
17 PNK K13D P PNK
KEYPWR
18 TAN (OR WHT) K23­G 2 2M
EFAN
19 RED K14L
TIMER
20
21 WHT K41­GB WHT
MAF GND 9
22 WHT K95­GA WHT
EGT1 GND 10
23 PPL K99­G PPL
APS1 GND 11
24
25 TAN K95V TAN
AFP1 12
26 TAN K95T TAN
AFT 13
27 TAN K95C TAN
EGT3 14
28 TAN K95A TAN
EGT1 15
29 1 WHT
30 TAN K23 TAN (OR WHT) TAN
EFAN 12V
31 TAN TAN
32 TAN
2
33 TAN K95VC TAN
HEATER + 16
34 YEL K98YL2 (OR K5S+)
J1939 (+) COMPUTER DATA 
35 GRN K98GN LINES SYSTEM
CAN­L
36 PPL K99A5V PPL
APS1 5V 17
37 TAN K34BA
REMP1 5V
38
39 TAN K95VE TAN
NVOLT 18
40 WHT K95VIR WHT
VIRGND 19
41 WHT K95­GE WHT
AFP1 GND 20
42 TAN K34B TAN
ECL 12V 21
43 WHT
22
44 TAN K41B TAN
MAF 23
45
46 TAN K95VB TAN
HEATER ­ 24
K98GN2 PPL
25
47 GRN (OR K5S­) COMPUTER 
J1939 (­)
48 YEL K98YL DATA LINES 
CAN­H SYSTEM
49 TAN K34BB TAN
FSS 5V 26
50 PPL K99D5V TAN
APS2 5V 27
51 TAN
28
52 TAN K95VA
PUMPCUR
53 TAN K95VD
TRIMRPS
54 TAN K41C
MAF 12V
55 WHT K95­GB
EGT2 GND
56
57
(OR K23A1)

(OR K23A1)

58 TAN K23C
FSS
6018
K23­G
K23B1
K92A1

K23C

K23

BOSCH ECM
A WHT K34­GA
K34BB

K34BA

K92A1

K23B1

TAN

TAN

TAN

TAN

TAN
B TAN

A TAN

D TAN

D TAN

ECM 5V  ECM 0V 
ADAPTER 6706 ADAPTER 6707 VARIABLE SPEED FAN
370382

Fig 2: Engine Performance Circuit (2 of 4)
AFTER TREATMENT  HCI FUEL 

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LOW  AFTER TREATMENT  HCI FUEL 

COOLANT  FUEL TEMPERATURE &  TEMPERATURE & 
SENDER VERTICAL EXHAUST/HORIZONTAL EXHAUST PRESSURE SENSOR PRESSURE SENSOR

1
B

A
F

G
2

2
4

3
D

J
C
WHT

K95­GA WHT

K95­GB WHT

WHT

K95­GE WHT
TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN
K34B

K95E

K95B

K95DB

K95S
K95V
K95A

K95DA

K95T
K95­GD
K34C

K95­GC

K95C

K95DC

K95R
RED K14M RED
1 1
WHT K92D16 WHT
2 2

K95D TAN
3

WHT K41­GA WHT

3 4
WHT
4
PPL K99­GD
5
TAN
6

TAN K41A TAN

7 5
TAN
8

WHT K41­GB WHT

9 6
WHT
10
PPL K99­G
11

TAN
12
TAN
13
TAN
14
TAN
15

TAN
16

PPL K99A5V
17
K95­GD WHT
7
K95R TAN
8
TAN
18
WHT
19
WHT
20
TAN
21
WHT
22
TAN K41B TAN
23 9
K34C TAN
10
TAN K95S TAN
24 11
PPL K99D5V
25
K99 PPL
12
K99D PPL
13
TAN
26
TAN
27
TAN K41C TAN
28 14
PPL

PPL

PPL

PPL

PPL

PPL
190
B

190M
P

A
O

N
C
K95VIR
K95VD

K95VC
K95VB

K95VE
K95VA

A99D5V

A99­GD
A99AV

A99­G
A99D
A99
WHT
TAN

TAN

TAN

TAN

TAN

VIO

VIO

VIO

VIO

VIO

VIO
D

C
B

E
F
5

EXHAUST LAMDA SENSOR THROTTLE POSITION SENSOR
370383

Fig 3: Engine Performance Circuit (3 of 4)
HOT W/ HOT W/

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HOT W/ HOT W/
IGNITION RELAY IGNITION RELAY
ENERGIZED ENERGIZED
ENGINE PARK  FUSE 
BRAKE SWITCH BLOCK 1
FUSE F FUSE M
5A 5A

C
GRY
A44V

GRY
A44V

A97ALV

PNK
A13DF
VIO

VIO
A44EC
POWER 
DISTRIBUTION 
SYSTEM
RED K14M RED
1 1
WHT K92D16 WHT
2 2

2M
Q
2
PNK
TAN K95D TAN
3 3

WHT
4

TAN
4

TAN
5

WHT
6

LT GRN
5

A44EC VIO
6

WHT K95­GD WHT

7 7
TAN K95R TAN
8 8

TAN
9
TAN K34C TAN
10 9
TAN K95S TAN
11 10

PPL K99 PPL

12 11
PPL K99D PPL
13 K13D4 12

TAN
14
COOLING 
PNK

FANS SYSTEM

WHT
13
K10WH1
K97AJ1
K95H

K41­GB

K41­GA

K10­GK
K97AK

K10­GJ
K95J

K97AJ

K97AK

K13FA
K47A

K21B3

K21B2

K21B1
K97AJ

K95H

K41C

K41D
K47A

K41B

K41A

K97Y

K13F
K95J
K47

K47
GRY

GRY

PPL

PPL
TAN

TAN

VIO

LT GRN
WHT

WHT

WHT

WHT
GRY

GRY

PNK

PNK
TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN

TAN
PPL

PPL
B

A
2

10

14

15

19

20

21
11
12

13

2
CSRE
HCI IDV

HCI IDV

MAF 12V

MAF

IAT

IAT

BATT

BATT
VSS­H

VSS­L

MAF GND

IAT GND

EGRD

CSRD

GND

GND
CSRC

HCI INJECTOR  TRANSMISSIONS 
DOSING VALVE VEHICLE SPEED  SYSTEM
SPEEDO SENSOR
SENSOR (ALLISON 
(M/T) TRANSMISSION)
370384 ENGINE SENSOR INTERFACE

Fig 4: Engine Performance Circuit (4 of 4)
HOT W/ AMBIENT 
IGNITION RELAY 2

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AMBIENT 
IGNITION RELAY 2 TEMPERATURE  HCI FUEL 
ENERGIZED SENSOR VALVE
FUSE 
BLOCK 8
FUSE H
15A

1
2
41D
TAN

TAN
41E

TAN

TAN
A24AM
GRY

B
A

K41E
LT GRN
K41D

LT GRN
RED K14M RED 1
1 B+
WHT K92D16 WHT 2
2 TIMER
3
4
5
6
K95K TAN 7
ASV­H
TAN K95D TAN 8
3 AFP2 5V
9
10
11
12
13
14
15
TAN K97Y TAN 16
4 EGRD
17
18
19
K95M TAN 20
ASV­L
21
K97AE PPL 22
CRUISE CONTROL 
SYSTEM K97CA (OR K97AA) PPL 23
24
25
26

AIR CONDITIONING  K23B (OR K23AC) (OR K23C) (OR K23M) (OR K23AD) TAN 27

ACD­SW
SYSTEM 28
29
30
31
32
K97AL PPL 33
CRUISE CONTROL SYSTEM BNO1
34
35
K97AH PPL 36
CRUISE CONTROL SYSTEM
37
LT GRN 38
5

VIO A44EC VIO V K44EC GRY 39

6 PB­SW
190M 190 K24AE GRY 40
EB­SW1
WHT K95­GD WHT 41
7 EGDP GND
TAN K95R TAN 42
8 APF2 GND
K41E LT GRN 43
IAT GND
44
45
46
47
48
TAN K34C TAN 49
9 ECL
TAN K95S TAN 50
10 APF2
K97CB 51
PPL CRUISE CONTROL  (OR K97AB) PPL 52
11
PPL SYSTEM K24AF GRY 53
12 EB­SW2
K99 PPL 54
APS1
K99D PPL 55
APS2
56
57
INTERIOR LIGHTS  INTERIOR LIGHTS  58
WHT SYSTEM SYSTEM 6019
13 190
K10WH1 BOSCH ECM
M L 190M
(NOT USED)

(NOT USED)
A62­GEB

A11­GVA

A62­GL
DK BLU

DK BLU

DK BLU
A24AM

A24AD

A24AD
K62EB

A24AE

A62ES
A24AF
K10­GA

WHT

WHT
GRY

GRY

GRY

GRY

GRY
B WHT A11­GVA

A11­G
WHT

A WHT A11­GU
A WHT A11­GV

K WHT A11­GV

WHT

10 8 5 6 2 3 9 2 3 6 10 8
A11­GRE
K WHT
A WHT

HARNESS 
GROUND RIGHT 
(LEFT ENGINE  GROUND  GROUND  GROUND  SIDE CAB 
BLACK GROUND) ADAPTER  ADAPTER  ADAPTER  GROUND 
ENGINE BRAKE ON/OFF SWITCH ENGINE BRAKE SELECTOR SWITCH
450M 451M 457M STUD
370385

For engine performance wiring diagrams, see ENGINE PERFORMANCE WIRING DIAGRAMS article.

 
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EXTERIOR LIGHTS

Fig 1: Backup Lamps Circuit
BODY BUILDER  HOT W/ IGNITION 
CONNECTOR IGNITION RELAY 2 HOT AT RELAY
RIGHT SIDE 
ENERGIZED ALL TIMES
GROUND STUD
FUSE  FUSE  FUSE  FUSE 
BLOCK 8 G D BLOCK 7 WHT
10A 20A 85
E

E
4460BM

4450M
A11­GB
G1
ORG

LT BLU

LT BLU
ORG
ORG
GROUND ADAPTER 

NCA
(458M)
A11­GBA WHT A

A71
A71
R71BB

N71BB

A13GE
A71BBV
A13GE WHT J

E LT BLU 73 A71BB LT BLU C2 85

4450BF 4460BM N71BB 1701
A13GE NCA C1 86
E1 NCA AF13GE NCA
86
AF13GE
BODY  A71BBV LT BLU D1 30
ACCESSORY 
RELAY
A71AC ORG D2
A1 BLK 20 A71A ORG 87
K313NO A71B ORG
LT BLU 21 CATERPILLAR  BODY BACKUP 
B1
TRANSMISSION LIGHT RELAY
108M K313CM 100
ORG A71AC

RELAY 1 
ORG K71A

A71B ORG A2
ORG K71
ORG A71

VEHICLE 
INTERFACE  A71A ORG 87
MODULE
1701F

A71 ORG B1 30
2M

1
1701

REVERSE  STARTING/  86
ORG A1
G

2
H

PNK
LIGHT CHARGING 
NCA A ORG SYSTEM A17FA A71FB
N71A
ORG

K71 TAN B2 85
A92
A92F
TAN
A
9303A

NCA B ORG REVERSE 

2M

RANGE RELAY
K71A
E

2
A
ORG
R71

TAN 5
B WHT E WHT WHT K92
N10G 9303A R10­G R10­GB TAN 8
R10­GB

A GRY K92A
R71A

R71B

WHT
ORG

ORG
NCA

NCA
NCA

N11­GA 70­WAY CAT 
CHASSIS GROUND  TCM CONNECTOR
SPLICE PACK (8807)

GRY
N11­GA
BACKUP  BACKUP 
GROUND LAMP LAMP
(AT DASH) LEFT TAIL LIGHT
RIGHT TAIL LIGHT

370404

Fig 2: Beacon Lamp Circuit

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HOT W/ ACCESSORY
RELAY ENERGIZED
FUSE 
BLOCK 4
FUSE 
K
20A

LT GRN A86F

5 A86F LT GRN 5
429
A86­GF WHT 11

ROOF 
6 ORG A60A CONNECTOR 1
(NOT  13 WHT A11­GA
USED)
7 ORG A60B A11­G WHT
429
RIGHT CAB 
GND STUD

NCA B ORG A60B A60A ORG B NCA

NCA A WHT A60­GB A60­GA WHT A NCA

LEFT  RIGHT 
BEACON LIGHT BEACON LIGHT

370406

Fig 3: Exterior Lamps Circuit (1 of 3)

TAIL LIGHT RELAY
HOT AT TAIL/CLEARANCE  HOT AT

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HOT AT TAIL/CLEARANCE  HOT AT
ALL TIMES ALL TIMES LEFT TURN 
SPLICE PACK
FUSE  FUSE  RELAY 
BLOCK 7 SPLICE PACK
FUSE  FUSE  BLOCK 
B H 10
15A 30A

87

30

85

86
B

A68E BRN C4

A58P BRN D4
A68V BRN D3

A58­G WHT C3
A

A
G

C
A70E ORG

ORG

ORG
BRN

A54F BRN

A58A BRN

A68E BRN

A68V BRN
(OR ORG)
A54CT

A56B
A56CT
BRN
A68T
BRN
BRN
A WHT A11­GBA

A68
A54L
H WHT A11­GT

GROUND ADAPTER 
(458M)

A3 WHT A11­GT
86 WHT A11GT WHT
1
NCA A11GT
NCA A11GT WHT
2
85 B4 ORG A70D ORG
3
BRN
4
30 B3 ORG A70E

87 A4 ORG A70T
ORG
5
TRAILER 
STOP RELAY

86 E3 NCA A11GT

85 F4 BRN A54CT

30 F3 BRN A54VT BRN

6

87 E4 BRN A54T

TRAILER  BRN
MARKER RELAY 7

86 G3 NCA A11GT

85 H4 ORG A56CT

30 H3 ORG A56VT ORG

8

87 G4 ORG A56T WHT

9

TRAILER LEFT 
TURN RELAY

BRN
10

86 G1 WHT A11­GS WHT

11

85 H2 ORG A57CT ORG

12

30 H1 ORG A57VT ORG

13
A68T

87 G2 ORG A57T GRY

14
(OR ORG)

TRAILER RIGHT 
TURN RELAY
ORG A57T

ORG A56T

BRN A54T

ORG A70T

GRY A94T
BRN

INTERIOR  1701F
1701 LIGHTS  10
1701
6

9
5

SYSTEM
N54T
YEL N56T

BRN N68T

RED N70T
A62­GML
N57T

A62ML
A58P

A58E
BRN

GRY N94T
LT GRN

DK BLU
DK BLU
BRN

BRN
N57E

N56E

N54E
N57T

N56T

N54T

N57F
N57T

N56F
N54T
N54F

N68E

N70E

N94E
N56T

N94F
N68T
N68F

N70T
N70F

N68T

N70T

N94T
10
1

94T

MARKER 
LT GRN
LT GRN

LT GRN
LT GRN

INTERRUPT 
GRY
GRY

GRY
GRY
BRN
BRN

BRN
BRN

BRN
BRN

RED
RED

BRN
BRN
RED
RED
YEL
YEL

YEL
YEL

SWITCH
C

C
A

C
B

A
C

B
B

GREEN ABS  TRAILER  TRAILER  GREEN ABS 

TRAILER SOCKET 2 SOCKET 2 SOCKET TRAILER SOCKET 1
370407

Fig 4: Exterior Lamps Circuit (2 of 3)
HOT W/ IGNITION HOT AT
RELAY ENERGIZED ALL TIMES HAZARD LIGHT SWITCH HAZARD SWITCH 
DIODE TURN/HAZARD 
FUSE  FUSE  FLASHER
BLOCK 4 BLOCK 7

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FLASHER
BLOCK 4 BLOCK 7
FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE 
G K A J F C M
5A 30A 20A 15A 15A 20A 5A

1
2
2
DK BLU 10
8

4
3

9
5

5
A60L ORG

A60LA ORG
GRY

GRY

ORG

ORG

ORG

ORG
ORG

ORG

ORG

ORG

ORG

ORG

ORG
WHT
BRN

DK BLU
A70B

A60HB
A94CT

A94VT

A54VT

A56VT

A57VT

A60HB

A55V
A60HA

A60HA
A62­GHZ
A62HZ

A55
A60L

A11­GUD
A60R
INTERIOR 
LIGHTS 
SYSTEM

ORG
1
ORG
2
WHT ORG
1 3
ORG
4
WHT A11­GBA WHT
2 5
ORG A70D ORG
3 6
BRN A58A BRN
4 7
A56RC ORG
8

ORG A56B ORG

5 9

ORG
10

BRN
6

WHT
11
BRN A54L BRN
7 12

ORG
8

WHT A58­G WHT

9 13

ORG
14
BRN A68 R57 ORG C R57 ORG

1701
10 15
9303A
WHT A11­GS
11

1701F
2
ORG 4
12

ORG
BRN
N68

N56
ORG
13
B
9303A
D

GRY
14
R68

BACKUP  BACKUP 
LAMPS  LAMPS 
BRN

CIRCUIT CIRCUIT
R68B
ORG R71A

ORG R71B
R57
R68A

ORG R56

ORG
BRN
BRN

LEFT  RIGHT 
TAIL LIGHT TAIL LIGHT
GRY A94CT

WHT A11GT
GRY A94VT
GRY A94T

A11­GUD
A11­GRE

A11­GU

A11­GU
A57CT

A11­G

R10­GA
A57B

WHT
WHT
NCA

R10­GB
NCA

NCA

N11­GA WHT
WHT

WHT

WHT

WHT

WHT
C ORG

ORG

R10G
WHT

GROUND
A

E
30

(AT DASH)
85
87

86

RIGHT SIDE 
CAB GROUND 
9303A

STUD
N11­GA WHT A
E

RIGHT TURN  GROUND  GROUND  N10G WHT B

RELAY  ADAPTER  ADAPTER 
SPLICE PACK (457M) (451M)
TRAILER ABS  CHASSIS GROUND 
RELAY SPLICE PACK (8807)
370408

Fig 5: Exterior Lamps Circuit (3 of 3)
STOP LIGHT 
HOT AT ALL TIMES
SWITCH
FUSE  LEFT TURN STOP RELAY LEFT TURN RELAY
STOP LIGHT  LEFT TURN  BODY  RIGHT TURN 
FUSE  FUSE  FUSE  BLOCK  SPLICE PACK
11 W/ DRL  STOP  W/ DRL 
E M F
RELAY RELAY RELAY

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11 W/ DRL  STOP  W/ DRL 
E M F
RELAY RELAY RELAY
25A 20A 20A

NCA

NCA

87A
87

30

85

86

87

30

85

86

86

85

86
E

B
A

F
D

C
A55V

GRY
ORG

ORG
A107

A70

A3
B3
ORG 1M

F1
C4
D4

E4
E3

C3
J

D2
A4

B4

G3
ORG
ORG
ORG

ORG
ORG
RED
ORG

A55A ORG

A56A ORG
A56B ORG

A56S ORG
A56D ORG

A56D ORG

A57D ORG
A56­G WHT
A56­G WHT

RED
A56AA ORG
A70AL ORG

A56RC ORG

A56S ORG

ORG
A56­G WHT
A70A
A70BA

A70AL
A70D
A70BBC
A70AR
A70A
A70

A70BBC
A55
A56C ORG

ORG

A60LA ORG
A56CL
A56 ORG 7 NCA
ORG A107 GRY 10 NCA
1
ORG
2
ORG
3
ORG A60R A57 ORG 8 NCA
4
WHT
5
ORG
6 TURN SIGNAL 
BRN SWITCH
7
ORG
8

A57D ORG
B2
ORG A57S ORG 86
9

A57­G WHT A1 85
A57­9 NCA

ORG A57B ORG A2 30

10
A5A ORG
A55A ORG B1 87

RIGHT TURN 
RELAY
WHT A11­GS WHT
11
BRN A54L A11­GS WHT
12
A11­GS WHT
86

START SWITCH 
GROUND RELAY

A94SS GRY F2 85

WHT A11­GS WHT E1 86

13

ORG A70B ORG F1 30

14
ORG
15
A70BA ORG E2 87

STOP LIGHT RELAY

A57­9 NCA E2 85

A57R ORG C1 86
1M

R57 ORG 3 A57RC ORG E1 30

K
P

1701F 1701
1
12 WHT A58­GA

A70AR ORG D2 87A

A58A

M57 ORG P A57C ORG

ORG M56C
A54L

ORG M57

3M A57CL ORG A57AA ORG C2 87

BRN

COMPUTER
DATA LINES
5 BRN
429

SYSTEM

RIGHT TURN 
4327
8

STOP RELAY
4

WHT A11­GBA

WHT A58­GA
WHT A11­GS
WHT A58­GA
A58A

A5C(+)

A56CL
A57CL
A5C(­)
M56/57C

A­11GBB
4327

M54C

A94SS
A56­G
A58­G
A57­G
ORG
BRN
BRN

13 LT GRN
ORG
ORG
A

12 YEL

421M
M56/57B

WHT
WHT
WHT
WHT

GRY
M11­GB
M11­LGB

A11­GB

A11­G1
M54B

3
2
WHT

ORG
BRN

WHT

WHT
NCA

NCA

WHT

1360
LH TURN/STP
RH TURN/STP
CAN HIGH
CAN LOW

H
D

B
A

8
3

SUNSHADE 
CLEARANCE  LEFT  CLUSTER GROUND ADAPTER  RIGHT SIDE  ABS CONTROL 
LIGHT GROUND  SIDE TURN/MARKER (452M) CAB GROUND  MODULE
STUD STUD
370409

Fig 6: Work Light Circuit

HOT AT

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HOT AT
ALL TIMES
FUSE 
FUSE  BLOCK 11
K
15A

ORG
A65V
A11­GD WHT

LEFT SIDE CAB 
GROUND STUD
4 ORG A65V
A11­GE WHT A

1 WHT A62­GWL A62­GWL WHT G

GROUND 
ADAPTER 
(455M)
5 ORG A65 68 N65 ORG A NCA
1701
2 WHT A11­GUB
N65­G WHT B NCA
10 DK BLU A62­WL
WORK LIGHT

WORK LIGHT 
SWITCH N65­G WHT D

E DK BLU A62­WL N11­GB GRY A

CHASSIS GROUND 
A DK BLU A62A SPLICE PACK 
(8809)
PANEL LIGHT 
SPLICE ADAPTER 1 
(503M) N11­GB GRY

C WHT A11­GUB GROUND

(AT DASH)
A11­GU A11­GU
A WHT (OR A11­GV) (OR A11­GV) WHT K

GROUND 
A11­GRE WHT A
ADAPTER (451M)
A11­G

GROUND SPLICE 
PACK 5 (457M)
5 DK BLU A62
WHT

CLUSTER
RIGHT SIDE CAB 
GROUND STUD

370405

 
 
GROUND DISTRIBUTION

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Fig 1: Ground Distribution Circuit (1 of 4)

DIFFERENTIAL LOCK FAN OVERDRIVE SWITCH, HEAD LIGHT SWITCH, WORK LIGHT SWITCH,

CONTROL, BODY XMSN RETARDER SELECTOR SWITCH, CRUISE BRAKE ON / OFF SWITCH,
DIFFERENTIAL
MARKER RELAY, STARTER FOG LIGHT SWITCH, HAZARD LIGHT SWITCH,
LOCK SOLENOID
RELAY & START ATC SWITCH & INHIBIT REGEN SWITCH, MIRROR HEAT SWITCH &
SWITCH GROUND RELAY ENGINE BRAKE ON/OFF SWITCH DOME LIGHT SWITCH

A49­GS

A11­GVB

A11­GUB
A49­GA

PNK
A17FA

A11­GVA

A11­GUA
A11­GUF
A17­G

A11­GUG
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
A63­GUH
A23­GL

A62­GVD

A11­GUD
A11­GJ

A11­GVC

A11­GUC
(OR A11­GY)

A63­GUH

A11­GUG

A11­GUD

A11­GUC

A11­GUB

A11­GUA
A11­GUF
A62­GVD

A11­GVC

A11­GVB

A11­GVA
A11­GW

A11­GV

A11­GV
A23­GL
A49­GA

A11­GX
A11­GJ

A17FA

A17­G

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
WHT

WHT

WHT

WHT
PNK

G
D

C
K

B
F

J
C

D
B

GROUND ADAPTER  GROUND ADAPTER 

A
GROUND ADAPTER  (450M) (451M)
(448M)
RIGHT TURN RELAY DRL,

WHT
A11­GU
(OR A11­GV)
LEFT TURN RELAY DRL,
XMSN RETARDER ON/OFF SWITCH,
SUNSHADE CLEARANCE DIFFERENTIAL LOCK ENABLE SWITCH,
LIGHT, MAP LIGHTS & HAZARD LIGHT SWITCH,
ROOF CONNECTOR 1 IGNITION RELAY 1,
(OR A11­GY)

AIR SWITCH 1,AIR SWITCH 2,
IGNITION RELAY 2,
AIR SWITCH 3,AIR SWITCH 4,
A11­GW

DIFFERENTIAL LOCK SPEED SWITCH &
A49­GS
A11­GX

FROM GROUND  AIR SWITCH 5 & AIR SWITCH
A58­GA

A86­GF
A63­GG
WHT

WHT

WHT

FOG LIGHT SWITCH
WHT

WHT

WHT

ADAPTER (453M)  6
(DIAGRAM 2 OF 4)

A11­GHB

A11­GHE

A13GM
A11­GHA

A11­GHF

A62­GDF

A13­G

A49­G
A62­GHZ
WHT

WHT

WHT

WHT

WHT

WHT

WHT
A62­GPT
WHT

WHT

WHT

WHT

WHT
DK BLU

A62­GFL
A11­GHD
A11­GHC
A
K

A11­GRD
WHT

GROUND ADAPTER 
(449M)
WHT
A11­G

RIGHT HEADLIGHT,
START SWITCH GROUND

(OR A11­GV)
RELAY, BUMPER FOG LIGHT

A62­GDF

A62­GHZ
A11­GRE

A62­GPT

A62­GFL
& WASHER PUMP
A11­GH

A11­GU
DK BLU

A13GM
A13­G

A49­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
A11GS

A64­RGB
GRY
A11­RGA

A87GG
WHT

WHT

YEL

G
H

D
A

K
F

J
A11­GB
WHT

GROUND ADAPTER 
(457M)

HIGH SPEED RELAY,
RIGHT POWER DOOR LOCK
RIGHT TURN RELAY, RIGHT TURN W/ DRL, POWER DOOR LOCK
MSM 1 MODULE RELAY, AC CONTROL RELAY,
LEFT TURN RELAY, LEFT TURN W/ DRL, RELAY, POWER DOOR
CONNECTOR & POWER WINDOW RELAY,
LOW BEAM RELAY, ACCESSORY RELAY, LOCK UNLOCK
PARKED AIR DRYER RELAY,
AC RELAY, TAIL LIGHT RELAY & RELAY & RIGHT
REGEN SWITCH MAIN CONTROL RELAY,
WINDSHIELD WIPER MOTOR POWER LOCK SWITCH
HEATER CONNECTOR 3,
BODY BACKUP LIGHT RELAY,
A11­GBB

A81­GB
A81­GA

A95­GA
A57­G

A56­G

A50­G

A58­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
LT BLU

LT GRN

LT GRN
YEL

YEL
A66­GL

A81­GD
K82­GC

A95­GC
A66­GR

A12­GR

TRAILER STOP RELAY &
IGNITION RELAY A13GE
A75­G

A12­G
WHT

WHT

WHT

WHT

WHT
A11GT
WHT
A13­GAD

A63­GW
T
2
2M
A11­G1
WHT

A13­GAD

A63­GW
A11­GBB

A11­GBA

A13GE
A11GT
A66­GR

A12­GR

A75­G

A12­G
A66­GL

A82­GC

A81­GC
LT BLU

WHT

WHT

WHT

WHT

WHT

WHT
A57­G

A56­G

A50­G

A58­G

A81­G

A95­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
YEL

YEL

G
C

H
A

B
F

F
J

RIGHT SIDE 
CAB GROUND 
STUD
GROUND ADAPTER  GROUND ADAPTER 
(452M) (458M)
370413

Fig 2: Ground Distribution Circuit (2 of 4)

ALLISON SHIFTER,
ABS­6 ECU CONNECTOR 1,
DRIVER SIDE HEATED SEAT TO GROUND 
CONNECTOR, BLINK CODE SWITCH, RECIRC MOTOR, ADAPTER (455M) 

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CONNECTOR, BLINK CODE SWITCH, RECIRC MOTOR, ADAPTER (455M) 
MIRROR MOTOR/HEAT LIGHT/POWER AIR DISTRIBUTION CLUSTER (DIAGRAM 2 OF 4)
CONNECTION, SHIFT SELECTOR & SHIFT MOTOR & HVAC LEFT HEADLIGHT & DIAGNOSTIC DATA LINK &
T­CASE COOLING FAN CONNECTOR CONTROL BUMPER FOG LIGHT PARK BRAKE SWITCH B

A92­GTB

A64­LGB

A11­GE
A11­GBM

A75­GM
GRY
A94­GA

A92­GTA

A75­GK

A11­LGA

A44­GA
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
TAN

TAN

TAN

LT GRN

LT GRN

LT GRN
A94­GL2

A105­GL

A94­GL

A75­GL

A11­GCL

A62­GCL
A92D
N1­GTC

A11­GR
1701F
53

A11­GD
1701

WHT
A11­G1
WHT
A11­GBM
A94­GL2

A105­GL
A94­GA

A94­GL

A11­GT

LT GRN
A92­GT

A75­GF

A11­GY
WHT

WHT

WHT

WHT

WHT
GRY

WHT
TAN
G
C

D
B

A
F

GROUND ADAPTER 
(454M)

CAB STEPPER MOTOR, BUNK STEPPER MOTOR PARKED REGEN SWITCH, MIRROR
DRL, POWER SOURCE 2 POST, HEAT SWITCH, DOME LIGHT SWITCH,
POWER SOURCE RECEPTACLE, CIGAR LIGHTER, MARKER INTERUPT SWITCH, CRUISE BRAKE ON/OFF SWITCH,
RADIO 1, RIGHT POWER MIRROR COURTESY ENGINE BRAKE ON/OFF SWITCH, CRUISE BRAKE SET/RESUME
LIGHT CONNECTOR & PASSENGER SIDE ENGINE BRAKE SELECTOR SWITCH, ATC SWITCH & PANEL
HEATED SEAT CONNECTOR SWITCH & FAN OVERDRIVE SWITCH LIGHT SWITCH
A86­GS

A62­GMS

A62­GEB

A62­GES

A94­GBE

A62­GCS
A11­GY

GRY
A66­GA

A84­G

A86­G

A75­G
WHT

WHT
A86­GT
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
A62­GFO

WHT
DK BLU

DK BLU
A62­GMH

DK BLU

DK BLU

DK BLU

LT GRN

DK BLU

DK BLU
A62­GDL

A62­GML

A62­GPL
A94­GTC
A105­GR

A62­GCR
TO RIGHT SIDE 
CAB GROUND 
STUD 
(DIAGRAM 
1 OF 4)

A
WHT
A11­GF
RIGHT
A62­GMH
A62­GMS

A62­GFO
A62­GDL

A62­GML
A105­GR

A94­GTC
A62­GEB

A94­GBE
A62­GES

A11­GFS
A11­GRD

HEATED LIGHTED
A66­GA

A86­GS

LT GRN
A86­GT

A11­GY

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU
A84­G

A86­G

A75­G

MOTORIZED &
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
GRY
WHT

LEFT
HEATED LIGHTED
MOTORIZED
G

G
C

H
A

A
F

A11­GFS
J

WHT

A11­GAE
A11­GZ
WHT

WHT
GROUND ADAPTER  GROUND ADAPTER 
(453M) (456M)

DOOR SWITCH/DOME
COURTESY LIGHT,
LEFT POWER LOCK SWITCH,
AUTO XMSN DRIVER SIDE LEFT/RIGHT
FREON TEMPERATURE ENGINE POWER WINDOW SWITCH,
COMPRESSOR & SENDER & XMSN SENSOR HEAD LIGHT SWITCH,
ENGINE OIL OIL TEMPERATURE INTERFACE POWER MIRROR SWITCH &
TEMPERATURE SENDER WORK LIGHT SWITCH
K30­GB

K10­GK

A83­GA
K77­G

K31­G

K31­G

A81­GG

A78­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
TAN

TAN

A62­GHL

A62­GWL
K10­GJ

REMOTE
CRUISE

FROM LEFT SIDE 
K97GG
VIO

CAB GROUND STUD 
AUTO 
K10WH1

(DIAGRAM 2 OF 4)
XMSN
B
WHT

MANUAL 
XMSN
A62­GWL
A62­GHL
K77­G

K31­G

K31­G

A81­GG

A83­GA
WHT

WHT

A11­GE
K10­GB
TAN

TAN

A78­G
K10­GA

WHT

WHT

WHT

WHT

WHT

WHT
K11­GA

A11­G2
K97GG
A WHT

WHT

WHT

WHT
VIO

G
C

C
E

HARNESS  CAB  LEFT SIDE 

GROUND SPLICE  GROUND  HARNESS  GROUND ADAPTER  CAB GROUND 
(6704B) (6314) (382) (455M) STUD
370414

Fig 3: Ground Distribution Circuit (3 of 4)

SECOND
SECOND SECOND PUSHER PUSHER FOURTH FUEL
TAG THIRD TAG TAG
PUSHER AXLE & AXLE & PUSHER HEATER
PUSHER

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TAG TAG TAG
PUSHER AXLE & AXLE & PUSHER HEATER
AXLE PUSHER AXLE AXLE
AXLE TAG AXLE TAG AXLE
AXLE
AXLE

N59­GB

N59­GB

N59­GE
N59­GA

N59­GA

N59­GA

N59­GA

N19­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
N59­GD

N59­GD

N59­GD

N59­GD

N59­GD

N59­GD
N59­GC

N59­GC

N59­GC
N59­GD

N59­GD

N59­GD

N59­GD

N59­GA

N59­GA

N59­GA

N59­GA
WHT

WHT

WHT

WHT

WHT

WHT

WHT
N59­GB

N59­GB

WHT

N59­GA

N59­GE
WHT

WHT

WHT

WHT
C

E
D

F
CHASSIS GROUND SPLICE 
WHT A

(8806)
N11­GC

LEFT TAIL LIGHT, RIGHT TAIL LIGHT, AIR RESTRICTION
LEFT SIDE AIR DRYER, LEFT SIDE HALDEX GAUGE, WORK LIGHT, RR AXLE
DRAIN VALVE, LEFT SIDE HEATED DIFFERENTIAL LOCK WARNING
DRAIN VALVE, RIGHT SIDE HEATED DRAIN LIGHT & FORWARD REAR AXLE
VALVE, LEFT SIDE BOC HEATED DRAIN VALVE & DIFFERENTIAL LOCK
BODY BUILDER CONNECTION WARNING LIGHT
N39­GB

N11­GBB

N49­GB
N49­GA
N39­GF

N39­GF

N39­GF

N39­GF

N39­GF
N10­G

N65­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT
N28­4
N11­GD

N49­GC
N11­GBB
N39­GB

N11­GD
N39­GF

N39­GF

N39­GF

N39­GF

N39­GF
N10­G
WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

WHT

N49­GA

N49­GA
N11­GC

N11­GA

N11­GA

N11­GB

N59­G

N59­G

N19­G
WHT

WHT

WHT

WHT

WHT

WHT
GRY

GRY

GRY
C

D
E

A
F

F
D

GROUND
CHASSIS GROUND SPLICE PACK  (AT DASH) CHASSIS GROUND SPLICE PACK  AIR SOLENOID 
(8807) (8809) GROUND SPLICE 
(8805)

CLUSTER,
GREEN ABS TRAILER PRIMARY AIR
SOCKET GROUND & BOSCH ECM 1 & BOSCH ECM 1 &
TRANSDUCER &
TRAILER SOCKET VARIABLE SPEED FAN VARIABLE SPEED FAN
SECONDARY AIR
GROUND TRANSDUCER
K23A1

K23B1
N10E

K34BB
A6PA

A6SA

K34BA

K34­GA
N10F

N10F
WHT

WHT

WHT

WHT

WHT
LT GRN

LT GRN

LT GRN

TAN

TAN

TAN

TAN
A6
N10D

N10D
WHT

D
A

A
1

TRAILER SOCKET 
GROUND FRONT  5 VOLT SOURCE  ECM 5V SPLICE  ECM 0V SPLICE 
OF CAB SPLICE PACK  (6706) (6707)
(1020)
370415

Fig 4: Ground Distribution Circuit (4 of 4)

RIGHT FUEL
CHASSIS CHASSIS RR AXLE FORWARD
SENDER &
INTER­ INTER­ TEMPERATURE REAR AXLE
LEFT FUEL

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INTER­ INTER­ TEMPERATURE REAR AXLE
LEFT FUEL
CONNECT CONNECT SENDER TEMPERATURE
SENDER
SENSOR

M11­LGB

M11­RGB

M9HB

R9B
GRY

GRY

GRY

GRY

GRY
M9HA

R9A
M9F
WHT

WHT
1 2

1 W/ STD AXLE TEMPERATURE 

2 W/ REAR AXLE TEMPERATURE

GRY
M9H
M11­GR
WHT

B
F
LEFT GROUND  RADIATOR  RIGHT GROUND 
STUD  GROUND  STUD  ISOLATED GROUND SPLICE PACK 

GRY A
(2G) (8) (2G) (8802)

R9
CLUSTER,
PRIMARY AIR
FLAME TRANSDUCER &
START SECONDARY AIR
FLAME START RELAY BATTERIES ALTERNATOR
RELAY TRANSDUCER
K14A1

K21A1

BLK

A9PA

A9SA
K2­G

K2­G
WHT

WHT
TAN

TAN

LT GRN

LT GRN

LT GRN
K21A2

A9
RED
K21­FL
BLK

FLAME START  FLAME START  FRAME 

BATTERY POWER  GLOW PLUG GROUND  GROUND
GROUND  (6564)
(6564)

1701
13
HORN
BATTERY HORN
BUTTON
85­GB
NCA

M85­G
WHT

WHT

W/ 2 GAUGE 
CHARGE

W/ 1 GAUGE 
CHARGE
LT GRN

LT GRN

LT GRN
A9SA
WHT

WHT

A9PA
K2­G

K2­G

GRY
A9B
A9
1

BATTERY  STEERING COLUMN  HORN GROUND  ENGINE BLOCK 

GROUND GROUND STUD GROUND ZERO VOLT SOURCE 
SPLICE PACK 
(1021)
370416

 
 
HEADLIGHTS

Fig 1: Headlights Circuit, W/ DRL (1 of 2)
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Fig 1: Headlights Circuit, W/ DRL (1 of 2)
LEFT SIDE  GROUND 
HOT AT HOT AT HOT AT HOT AT HOT W/ HOT W/
CAB GROUND  ADAPTOR 
ALL TIMES ALL TIMES ALL TIMES ALL TIMES IGNITION RELAY IGNITION RELAY 1
STUD (455M) FUSE  FUSE  ENERGIZED ENERGIZED
CIRCUIT  BLOCK 
WHT WHT A E FUSE  FUSE  FUSE  BLOCK  FUSE  FUSE 
BREAKER  10
A11­GD A11­GE L L J 11 FUSE  BLOCK  CIRCUIT  BLOCK 
M
10A 15A 25A D 4 BREAKER E 8
10A
INTERIOR  25A 20A
10 DK BLU A62HL
LIGHTS 
SYSTEM

A50A
A50
YEL

YEL
8 WHT A62­GHL

A51

A51
A66A
YEL

YEL

YEL

YEL
A66D
2 YEL A50

A82B
GRY

GRY
A82C
5 YEL A50A
4

6 YEL A50B
1
WIPER/WASHER 
SYSTEM
INTERIOR 
3 BRN A58V
LIGHTS 
SYSTEM
9 WHT A11­GUA
7

HEADLIGHT SWITCH

RIGHT SIDE  GROUND  GROUND 

CAB GROUND  ADAPTOR  ADAPTOR 
STUD (457M) (451M)

WHT WHT A K WHT A B

A11­G A11­GRE A11­GU

A YEL A64D YEL

1
B YEL A64C GROUND ADAPTOR  RIGHT SIDE CAB 
C YEL A66F (453M) GROUND STUD
D WHT A66­GA B A WHT WHT
A11­GRD A11­G
E YEL A66E YEL
2
F YEL A66H YEL
3
G YEL A66D
H YEL A66A

DRL MODULE

WHT WHT
A11­GB A11­GBB
A

RIGHT SIDE  GROUND 
CAB GROUND  ADAPTER 
STUD (452M)
F

WHT A50­G
A1
86 WHT A50­G
WHT A502G WHT
4
85 B2 YEL A50BL

YEL A52CL
30 B1 YEL A53

87 A2 YEL A51

LOW BEAM 
RELAY

86 C1 WHT A50­G

85 D2 YEL A50BH
A66F
YEL

30 D1 YEL A52

87 C2 YEL A51

HIGH BEAM 
RELAY
3M A11­RGA

A11­RGA
A11­LGA

A11­LGA

A52R

A53R
WHT

G WHT

G WHT

WHT
A52L

1M A53L
F YEL

A YEL

F YEL

A YEL

3
1
M11­LGA

4327R M11­RGA
M52R

M53R
M52L

M53L
WHT

WHT
YEL

YEL

YEL

YEL
4327L
A11­G1

1
2

2
3
4327

4327
WHT

A52CL

A50BH
A11­GB

A50BL

A50B

A82B
GRY
WHT

YEL

YEL

YEL

YEL
M11­GA

M52A

M53A
WHT
M52A

M53A
B WHT

M11­GA
YEL

YEL
A YEL

C YEL

4
421M
C
A

8
NCA

NCA

NCA

NCA

NCA

NCA

LEFT SIDE CAB  RIGHT SIDE 
GROUND  CAB GROUND  TURN SIGNAL SWITCH
STUD STUD
CLUSTER
370400 LEFT HEADLIGHT RIGHT HEADLIGHT

Fig 2: Headlights Circuit, W/ DRL (2 of 2)
HOT W/ IGNITION 
ACCESSORY RELAY RELAY 1
ENERGIZED
FUSE  GROUND  RIGHT SIDE 
FUSE  BLOCK  ADAPTER  CAB GROUND 
85
J1 4 (457M) STUD
15A
J2

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15A

J2
WHT E A WHT WHT
RIGHT TURN 
A13­G A11­GRE A11­G RELAY

A13­G
WHT
A57D ORG F1 86

A64
YEL
EXTERIOR LIGHTS SYSTEM

A13­G WHT G2 85

A13GM
WHT
A66­GR YEL G1 30

A66HR ORG F2 87

EXTERIOR  A56D ORG G3 86

LIGHTS SYSTEM
A13GM WHT G4 85

A66H YEL A66GL YEL F3 30

A66HL ORG F4 87

GROUND  LEFT TURN 
ADAPTER  RELAY
(452M)

YEL YEL E A WHT WHT

1
A66GL A11­GBB A11­GB
YEL C RIGHT SIDE 
CAB GROUND 
A66­GR
STUD

YEL A66E YEL A44B GRY C

2
YEL
3 STARTING/  GRY
CHARGING 
SYSTEM A44A A44­GA LT GRN D

PARK BRAKE 
SWITCH

A11­GD WHT

LEFT SIDE CAB 
GROUND 
STUD

A64 YEL F1 87

WHT A502G WHT E1 85

4

A64A YEL F2 86

M YEL A64B YEL E2 30

1M A64L
M YEL
3M A64R FOG LIGHT 
RELAY
A11­GV

A11­GV
WHT

WHT
K

GROUND 
A64­RGB

M64­LGB
GROUND 
ADAPTER  ADAPTER 
WHT

WHT

WHT
(451M) (450M)
M64­RGB
A62­GFL

M64R
M64L
WHT A

WHT D

WHT

WHT

YEL

YEL
A11­GU

3M

1M
A11­GVC

N
J

GROUND 
A64­LGB
WHT
ADAPTER 
4327
8

6
K

A64­RGB
YEL

(457M)
GROUND  INTERIOR 
ADAPTER  LIGHTS 
WHT A

(457M) SYSTEM
A11­GRE
WHT A

M64­GB

M64­A
A11­GRE

WHT
A11­GVC

A62­GFL

YEL
LT GRN
A62FL
A64D

A64A
WHT

WHT
YEL

YEL

A
5

8
7
A11­G

NCA

NCA
WHT

A11­GB

A11­G1
A11­G
WHT

WHT

WHT

RIGHT SIDE  LEFT SIDE 
CAB GROUND  CAB GROUND 
STUD STUD
RIGHT SIDE 
BUMPER 
CAB GROUND  FOG LIGHT SWITCH FOG LIGHT
370401 STUD

Fig 3: Headlights Circuit, W/O DRL (1 of 2)
HOT AT HOT AT HOT AT HOT W/
ALL TIMES ALL TIMES ALL TIMES IGNITION RELAY 1
FUSE  FUSE 
CIRCUIT  ENERGIZED
FUSE  BLOCK  FUSE  BLOCK 
BREAKER  10 FUSE 
L J 11 CIRCUIT  BLOCK 
M
10A 25A BREAKER E 8
10A
20A

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20A

A51

A51
A50A
A50
YEL

YEL

YEL

YEL
LEFT SIDE  GROUND 
ADAPTOR 

A82B
GRY

GRY
A82C
CAB GROUND 
STUD (455M)
WHT WHT A E
A11­GD A11­GE

WIPER/WASHER 
SYSTEM
INTERIOR 
10 DK BLU A62HL
LIGHTS 
SYSTEM
8 WHT A62­GHL
2 YEL A50
5 YEL A50A
4

6 YEL A50B
1

INTERIOR 
3 BRN A58V
LIGHTS 
SYSTEM
9 WHT A11­GUA
7

HEADLIGHT SWITCH
RIGHT SIDE  GROUND  GROUND 
CAB GROUND  ADAPTOR  ADAPTOR 
STUD (457M) (451M)

WHT WHT A K WHT A B

A11­G A11­GRE A11­GU

WHT WHT
A11­GB A11­GBB
A

RIGHT SIDE  GROUND 
CAB GROUND  ADAPTER 
STUD (452M)
F

WHT A50­G
A1
86 WHT A50­G
WHT A502G WHT
1
85 B2 YEL A50BL

YEL A52CL
30 B1 YEL A53

87 A2 YEL A51

LOW BEAM 
RELAY

86 C1 WHT A50­G

85 D2 YEL A50BH

30 D1 YEL A52

87 C2 YEL A51

HIGH BEAM 
RELAY
3M A11­RGA

A11­RGA
A11­LGA

A11­LGA

A52R

A53R
WHT

G WHT

G WHT

WHT
A52L

1M A53L
F YEL

A YEL

F YEL

A YEL

3
1
M11­LGA

4327R M11­RGA
M52R

M53R
M52L

M53L
WHT

WHT
YEL

YEL

YEL

YEL
4327L
A11­G1

1
2

2
3
4327

4327
WHT

A50BH
A11­GB

A50BL

A50B

A82B
GRY
WHT

YEL

YEL

YEL
M11­GA

A52CL
M52A

M53A
WHT
M52A

M53A
B WHT

M11­GA
YEL

YEL

YEL
A YEL

C YEL

4
421M
C
A

8
NCA

NCA

NCA

NCA

NCA

NCA

LEFT SIDE CAB  RIGHT SIDE 
GROUND  CAB GROUND  TURN SIGNAL SWITCH
STUD STUD
CLUSTER
370402 LEFT HEADLIGHT RIGHT HEADLIGHT

Fig 4: Headlights Circuit, W/O DRL (2 of 2)
HOT W/
ACCESSORY RELAY
ENERGIZED
FUSE 
FUSE  BLOCK 
J1 4
15A

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A64
YEL
A44A GRY
87

START SWITCH 
GROUND 
RELAY

A44A GRY C

A44­GA LT GRN D

PARK BRAKE 
SWITCH

A11­GD WHT

LEFT SIDE CAB 
GROUND 
STUD

A64 YEL F1 87
A64D YEL
WHT A502G WHT E1 85
1

A64A YEL F2 86

M YEL A64B YEL E2 30

1M A64L
M YEL
3M A64R FOG LIGHT 
RELAY
A11­GV

A11­GV
WHT

WHT
K

GROUND  GROUND 
ADAPTER  ADAPTER  YEL M64­LGB
WHT

WHT
(451M) (450M)
M64­RGB
A62­GFL

M64R
M64L
WHT A

WHT D

WHT

WHT

YEL
A11­GU

3M
A11­GVC

1M
N

N
J

GROUND 

A64­LGB
ADAPTER  WHT
4327
8

6
K

A64­RGB
YEL

(457M)
GROUND  INTERIOR 
ADAPTER  LIGHTS 
WHT A

(457M) SYSTEM
A11­GRE
WHT A

M64­GB

M64­A
A11­GRE

WHT
A11­GVC

A62­GFL

YEL
LT GRN
A62FL
A64D

A64A
WHT

WHT
YEL

YEL

A
5

8
7
A11­G

NCA

NCA
WHT

A11­GB

A11­G1
A11­G
WHT

WHT

WHT

RIGHT SIDE  LEFT SIDE 
CAB GROUND  CAB GROUND 
STUD STUD
RIGHT SIDE 
BUMPER 
CAB GROUND  FOG LIGHT SWITCH FOG LIGHT
370403 STUD

 
 
HORN

Fig 1: Horn Circuit

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HOT AT ALL TIMES
FUSE 
FUSE  BLOCK 10
F
15A

A85
GRY
A85D

A85D
GRY

GRY
HORN RELAY
86 30

85 87 87A

GRY A GRY A85C

18M GRY A85B T M85B GRY B NCA
1­1M
BLK (OR YEL) M85­G WHT A NCA

STEERING  HORN
HORN 
WHEEL 
BUTTON
SLIP RING
(PART OF 
M85­G

ADJUSTABLE 
WHT

STEERING COLUMN) STEERING 
WHT
85­GB

COLUMN 
GROUND HORN 
GND 
STUD

370425

 
 
INSTRUMENT CLUSTER

Fig 1: Instrument Cluster Circuit (1 of 2)

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HOT AT HOT W/ IGNITION
ALL TIMES RELAY 1 ENERGIZED
FUSE  FUSE 
BLOCK 10 BLOCK 8
FUSE  FUSE 
J J
5A 10A

LT GRN
A14CL

A13CL
RED
1 RED A14CL
BATTERY
2 ORG A57CL
RH TURN/STP EXTERIOR 
3 ORG A56CL
LH TURN/STP LIGHTS SYSTEM
4
5 DK BLU A62
INTERIOR LIGHTS 
6 DK BLU A62K
SYSTEM
7 LT GRN A13CL
8 YEL A52CL
HEADLIGHTS SYSTEM
9 DK BLU A63DCL
(INFO NOT AVAILABLE)
10 WHT A11­GCL WHT A11­GD
11 TAN A28 28
(NOT USED)
12 YEL A5C(+) 1701 LEFT SIDE CAB 
CAN HIGH COMPUTER DATA  GROUND STUD
13 LT GRN A5C(­)
CAN LOW LINES SYSTEM
14
421M
1 TAN A62UP
INTERIOR LIGHTS SYSTEM
2 GRY A40 GRY
1
3 GRY A40A GRY
2
4 DK BLU A62DN
INTERIOR LIGHTS SYSTEM
5
6 TAN A36A TAN
3
7 TAN A31
8 TAN A30
9 LT GRN A6 LT GRN
4
10 LT GRN A9 LT GRN
5
11
12 WHT A62­GCL WHT A11­GD
13 GRY A40B V
(INFO NOT AVAILABLE)
14 1 LEFT SIDE CAB 
15 BRN A54CL GROUND STUD
EXTERIOR LIGHTS SYSTEM
16 TAN A32A 43
17 TAN A32 44 B V 2
1701

(OR K31)
18 PPL A97WF T
(INFO NOT AVAILABLE)

K31B
TAN
19 GRY A44 190M
STARTING/CHARGING 
20 SYSTEM
M/T A/T
422M
K31

CLUSTER K31B
TAN

TAN

A TAN M32A

B GRY M9HB M9H GRY

6
FORWARD REAR 
AXLE TEMPERATURE 
SENDER
A TAN M32

W/ REAR 
AXLE TEMP
B GRY M9HA
GRY M9F GRY
REAR MOST  7
AXLE TEMPERATURE 
SENDER W/ STD 
AXLE TEMP
A TAN K30

B TAN K30­4B TAN

8
ENGINE OIL 
TEMPERATURE 
SENSOR

A TAN K31

B TAN K31­G TAN

9
XMSN OIL 
TEMPERATURE 
SENDER
A TAN K31B

B WHT K31­G WHT

10
AUTO XMSN 
TEMPERATURE 
SENDER

370397

Fig 2: Instrument Cluster Circuit (2 of 2)

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A40 GRY C
A6SA LT GRN B
A9SA LT GRN A

SECONDARY AIR 
TRANSDUCER

A40A GRY C
A9PA LT GRN A
A6PA LT GRN B

PRIMARY AIR 
TRANSDUCER

GRY
1
GRY
2

R36A TAN A NCA

TAN A36A TAN 27
3
W/ LSM VC 
1701 FUEL TANK
R9A GRY B NCA
LT GRN
4 LEFT FUEL 
LT GRN SENDER
5

A9 LT GRN 1
A9PA LT GRN 2
A9SA LT GRN 3
A9B GRY 8

ZERO VOLT 
SOURCE SPLICE 
PACK (1021)
NCA A TAN R36A
A6 LT GRN 1
A6PA LT GRN 2
NCA B GRY R9B A6SA LT GRN 3

RIGHT FUEL  FIVE VOLT 
SENDER SOURCE SPLICE 
PACK (1020)
R9B GRY C
GRY M9H GRY
6 D
M9F GRY
R9A GRY B
A9B GRY A

ISOLATED GROUND 
SPLICE PACK 
(8802)
GRY
7
HARNESS 
GND 
(6314)

WHT WHT A
K10­GA K10­GB
TAN K30­GB TAN E
8
K31­G TAN M/T
K31­G TAN (OR WHT) B
K31­G WHT A/T GROUND 
SPLICE 
STANDARD (6704B)
N28 TAN A

TAN
9
N28­4 WHT B

AIR RESTRICTION 
GAUGE

N28­4 WHT C
WHT N11­GB GRY A
10
CHASSIS GROUND 
GROUND  SPLICE PACK 
AT DASH  (8809)
(9717B)

370398

 
 
INTERIOR LIGHTS

Fig 1: Courtesy Lamps Circuit (1 of 2)

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370421
DK BLU F DK BLU C
A63E A63E
DK BLU B

WHT A
MAP LIGHT 2

LEFT DOOR 
SWITCH/DOME 
E63_GZ 10 WHT I WHT WHT B

COURTESY LIGHT
429 A63­GG A63­GG A63­GE

DK BLU A
E63B DK BLU E DK BLU C
A63E 430 A63D
WHT B

RIGHT DOOR 
SWITCH/DOME 
COURTESY LIGHT
Fig 2: Courtesy Lamps Circuit (2 of 2)
NCA A DK BLU A DK BLU
E63X A63X
MAP LIGHT 1

LIGHT
NCA A DK BLU B WHT WHT B

COURTESY 
RIGHT DOOR 
WHT F E63Y 1033 A63Y A63­GD

(458M)
WHT A NCA A DK BLU G DK BLU
A11­GBA E63H A63H

GROUND ADAPTER 
LIGHT
NCA A DK BLU C DK BLU

COURTESY 
LEFT DOOR 
E63V 1048M A63V

WHT A
A11­GFS

(456M)
WHT D 3 A63D DK BLU
4 A63E DK BLU

GROUND ADAPTER 
D
HOT AT

NCA B WHT
ALL TIMES

15A

C63­GC
FUSE 
Printer Friendly View

NCA A DK BLU D DK BLU 2 DK BLU A63 DK BLU

C
HOT AT

C63C D63C A63C

DOME LIGHT 2
ALL TIMES

15A

NCA C WHT DK BLU J DK BLU 14 DK BLU

FUSE 

(NOT 
USED)

C63­GJ D63­GK D63­GK D63­GK

WHT 3 1 DK BLU
FUSE 

A63­GUH 429 A63B

BLOCK 10

DK BLU 1
A63T
DK BLU 2 NCA B WHT WHT G WHT
A63S C63­GB D63­GF D63­GF

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DK BLU 7
A63LV
NCA A DK BLU C DK BLU
DK BLU 9 C63B 403 D63B

DOME LIGHT 1
429
9

NCA C WHT

DOME LIGHT SWITCH
WHT 8 C63­GH

DK BLU 10
A63­GG

A63GF
A63LV

A63S

DK BLU D
DK BLU
DK BLU

WHT
WHT

SPLICE 
ADAPTER 2
4
3
2
1

PANEL LIGHT 

35/58
19/11/2016 Printer Friendly View

E63B

A11­GFS

A63S

A63LV
A11­GBA
E63_GZ
WHT

WHT

WHT

WHT

WHT

WHT

WHT

A63T

WHT
DK BLU

DK BLU

A63­GUH
DK BLU

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU
A62­GDL

A63L

A62­GDL

A62DL

A62DL
E63C

E63_GW

A63­GW
DK BLU
1

1048

1043
G
H

F
E63_GA
WHT

A63DB
DK BLU

DK BLU
A63DC

WHT
2

DK BLU A63S
3

WHT A63GF
4

WHT E63_GA
WHT A11­GBA
WHT A63­GG

A
1034
WHT
A63­GUH

A11­GRE
ALL­GU

ALL­GU

WHT A11­GBA

C WHT A83­GA
WHT A11­GF

WHT A11­GD

A WHT A11­GE
WHT A11­G

WHT A11­G
WHT

WHT

WHT

WHT
A

A
J

GROUND  GROUND ADAPTER  GROUND ADAPTER 

RIGHT SIDE CAB  LEFT SIDE CAB 
ADAPTER  (457M) (455M)
GROUND STUD  GROUND STUD 
(451M) (53F) (56F)

370422

Fig 3: Instrument Illumination Circuit (1 of 3)

INHIBIT  PARKED  HOT W/ ACCESSORY EATON 

SHIFT  REGEN  REGEN  RELAY ENERGIZED HVAC  AUTOSHIFT 
SELECTOR SWITCH SWITCH CONTROL RADIO 1 CLUSTER CONNECTOR DISPLAY
FUSE  FUSE 
E BLOCK 4
15A
J1

1
J2

2
4

4
3

10

10

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J1

J2
10

10
A62MSP

A62P

A62UP

A92P
A78V

A62RA

A62K

A92MA
DK BLU

LT GRN
K62

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU
A62DN
TAN

TAN

TAN
A62
A62PR
101
E
DK BLU
TAN
1
DK BLU
2
J DK BLU A62TX A62HZ DK BLU
3
G DK BLU A62MSP DK BLU
4
A DK BLU A62A
C DK BLU A62HL DK BLU
5
D DK BLU A62PL DK BLU
6
E DK BLU A62WL DK BLU
7

K DK BLU A62BD

PANEL 
LIGHT SPLICE 
ADAPTER 1

A DK BLU A62B
TAN A92P
B
DK BLU A62PR
C DK BLU A62MH DK BLU
8
D DK BLU A62DL DK BLU
9
E DK BLU A62ML DK BLU
10
F DK BLU A62EB DK BLU
11
G DK BLU A62ES DK BLU
12
H LT GRN A62FL
J DK BLU A62TC DK BLU
13
K DK BLU A62FO

PANEL 
LIGHT SPLICE 
ADAPTER 2

E DK BLU A62T DK BLU

14
H DK BLU A62AS DK BLU
15
A DK BLU A62C
B DK BLU A62RT
C DK BLU A62PT
TAN A92MA
D DK BLU A62DF
WHT
PANEL  16
WHT
LIGHT SPLICE  17
ADAPTER 3 WHT
18
WHT
19
WHT
20
WHT
21
A62­GDF

A62­GVD

A62­GVD
A62­GPT

A62­GFL

A62GCR
A62CRB
A11­GV
A62­PT
A62DF

A62RT

A62FO

A62BD

A78­G
A62FL

A78V
LT GRN
DK BLU

10 DK BLU
LT GRN

WHT
DK BLU

DK BLU

DK BLU

DK BLU

WHT
WHT

WHT

WHT

WHT

WHT

WHT

A3
A1

A2

8
10

10

10

10
E

A
8

CRUISE 
DIFFERENTIAL  XMSN  XMSN  GROUND  FOG LIGHT  BRAKE 
FAN 
LOCK  RETARDER  RETARDER  ADAPTER  SWITCH SET/RESUME 
OVERDRIVE 
ENABLE  ON/OFF  SELECTOR  (450M) SWITCH
SWITCH
SWITCH SWITCH SWITCH POWER MIRROR SWITCH
370418

Fig 4: Instrument Illumination Circuit (2 of 3)
(453M) 
GROUND  MARKER INTERUPT  MIRROR HEAT  MIRROR HEAT 
CIGAR LIGHTER ADAPTER SWITCH SWITCH SWITCH
E

DK BLU 10

DK BLU 10

DK BLU 10
8

8
A62TA

A84­GA
WHT
DK BLU

A58E
BRN

DK BLU
A62ML

A62­GML
A84­G
WHT

WHT

WHT

WHT
A62MH

A62­GMH

A62DL

A62­GDL
A11­GRD

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A62TA

A84­GA
WHT
DK BLU

A58E
BRN

DK BLU

DK BLU
A62ML

A62­GML
A84­G
WHT

WHT

WHT

WHT
DK BLU
A62MH

A62­GMH

DK BLU
A62DL

A62­GDL
A11­GRD
1090F
C
A

1090M
WHT
1

TAN A62UP WHT

1 2
DK BLU A62DN
2
DK BLU A62HZ DK BLU
3 3
DK BLU
4

DK BLU DK BLU
5 4
DK BLU
6
DK BLU A62WL DK BLU
7 5

WHT
6

DK BLU A62MH
8
DK BLU A62DL
9
DK BLU
10
DK BLU A62EB DK BLU
11 7
DK BLU A62ES DK BLU
12 8

DK BLU A62TC DK BLU

13 9
WHT
10

DK BLU A62T
14
DK BLU A62AS
15

WHT
11
WHT
12

WHT A62­GDF WHT

16 13
WHT A62­GPT WHT
17 14
WHT A11­GV WHT
18 15
WHT A62­GFL WHT
19 16
WHT A78­G WHT
20 17
WHT A62GCR WHT
21 18
A62­GHL

A62CRA

A62GCS
A62­GPL
A62DN

A62UP

A62HL
A62PL

A62V

A58V

A62ASD

A62ASC
A62ASE

A62ASA

A62ASB
A62ASF
10 DK BLU

DK BLU

DK BLU

10 DK BLU

10 DK BLU
WHT

WHT

WHT
BRN
TAN

D DK BLU

D DK BLU

D DK BLU

D DK BLU

D DK BLU

D DK BLU
8
1

HEADLIGHT SWITCH CRUISE BRAKE 
ON/OFF SWITCH
PANEL LIGHT DIMMER SWITCH
AIR  AIR  AIR  AIR  AIR  AIR 
SWITCH 6 SWITCH 5 SWITCH 4 SWITCH 1 SWITCH 2 SWITCH 3

370419

Fig 5: Instrument Illumination Circuit (3 of 3)
ENGINE BRAKE  ENGINE BRAKE 
GROUND ADAPTER 
ON/OFF  SELECTOR  ATC 
(456M) SWITCH SWITCH SWITCH
E
A

F
G

DK BLU 10

DK BLU 10

DK BLU 10
8

8
D

J
WHT C

A11­GFS

A62­GEB

A62­GEB

K62EB

A62ES
WHT

WHT

WHT

WHT
A62­GMH

LT GRN

DK BLU

DK BLU

DK BLU

LT GRN
A62­GDL

A62­GL

A62­GML

A62­GL
A94­GTC

A94­GTC

A62TC

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A11­GFS

A62­GEB

A62­GEB

K62EB

A62ES
WHT

WHT

WHT

WHT

WHT
A62­GMH

LT GRN

DK BLU

DK BLU

DK BLU

DK BLU

DK BLU

LT GRN

DK BLU
A62­GDL

A62­GL

A62­GML

A62­GL
A94­GTC

A94­GTC

A62TC
WHT
1

WHT
2

DK BLU
3

DK BLU
4

DK BLU
5

WHT
6

DK BLU
7
DK BLU
8

DK BLU
9
WHT
10

WHT
11
WHT
12

WHT
13
WHT
14
WHT
15
WHT
16
WHT
17
WHT
18

WHT A62­GPL
A62GCR
A62GCS
WHT A11­GRD

A62WL
A62­GHZ

A62­GHZ

A62­GDF

A11­GRE
A62­GPT
A62­GFL
A62HZ

E WHT A62­GHL
WHT A11GFS

WHT A11­GF

WHT A11­GD
WHT A11­GV

A WHT A11­GE

C WHT A78­G
WHT A11­G

WHT A11­G
DK BLU

DK BLU

DK BLU

DK BLU
WHT

WHT

WHT

WHT
10

10
D

C
B

A
8

HAZARD LIGHT  GROUND ADAPTER  WORK LIGHT  LEFT SIDE CAB  GROUND ADAPTER 

RIGHT SIDE CAB 
SWITCH (457M) SWITCH GROUND STUD  (455M)
GROUND STUD 
(53F) (56F)

370420

 
 
PNEUMATIC SYSTEMS

Fig 1: Air Switch Circuit
HOT W/
IGNITION RELAY

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IGNITION RELAY
ENERGIZED
FUSE 
BLOCK 1
FUSE 
L
10A

PNK
A13D
A
IGNITION 
SPLICE 
PACK

G
B

E
D

C
PNK

PNK

PNK

PNK

PNK

PNK
A13DSE

A13DSB
A13DSD
A13DSA

A13DSF
A13DSC
A PNK A13DSA A13DSB PNK A
C WHT A11­GHA A11­GHB WHT C
D DK BLU A62ASA A62ASB DK BLU D
563M 564M
AIR SWITCH AIR SWITCH

A PNK A13DSC A13DSF PNK A

C WHT A11­GHC A11­GHF WHT C
D DK BLU A62ASC A62ASF DK BLU D
565M 568M
AIR SWITCH AIR SWITCH

A PNK A13DSD A13DSE PNK A

C WHT A11­GHD A11­GHE WHT C
D DK BLU A62ASD A62ASE DK BLU D
566M 567M
AIR SWITCH AIR SWITCH

H DK BLU A62AS A11­GH WHT H

A DK BLU A62C INTERIOR  A11­G WHT A11­GRE WHT A
LIGHTS SYSTEM
PANEL LIGHT  GROUND 
SPLICE  ADAPTER
ADAPTER 3
RIGHT SIDE 
CAB GROUND 
STUD

370437

 
 
POWER DISTRIBUTION

Fig 1: Power Distribution Circuit (1 of 3)
TCM  TRANS  CAB 
ECM  MEGA 
FUSE ECM  POWER 
FUSE FUSE

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FUSE ECM  POWER 
FUSE FUSE
10A 10A FEED  25A 200A 1374
FUSE

K14A
K14
RED

RED
A

RED

RED
N14B

N14B
N14Y

N14Y
RED

RED

RED

RED

N14A
N14
RED

RED
STARTING/ 
CHARGING 
SYSTEM
TRANSMISSIONS  ENGINE 
SYSTEM TRANSMISSIONS  CONTROLS 
BATTERY 
SYSTEM SYSTEM TO B2 
A STUD
(DIAGRAM 
B1 2 OF 3)

BLK

BLK

N14
RED
BLK BLK BLK BLK RED
A14H RED TO IGNITION RELAY 
G
BATTERIES A14HC (DIAGRAM 3 OF 3)

TO IGNITION RELAY 1 
F
(DIAGRAM 3 OF 3)

A14EA
PNK
RED
A14K

A14HA

A14HB
A14KC

A14KD
A14KA

A14KB

RED

RED
RED

RED

RED

RED
FUSE  FUSE 
BLOCK  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  BLOCK 
11 A J E K F B G L C M D G C M L D H 5
20A 25A 25A 15A 20A 20A 10A 15A 15A 5A 25A 20A 30A 20A 20A 10A 20A

A70BBV
RED
A51

A86M
A55V

A65V

GRY
A86K

A66A
A77T
LT GRN

LT GRN

LT GRN

LT GRN

A102
A70

A84

A15
YEL

YEL
RED

RED

RED

RED

A54BBV

A56BBV

A57BBV

A68BBV
ORG

ORG
BRN

BRN
TAN

TAN
A92C

A92C
HEADLIGHTS 
SYSTEM

AIR  EXTERIOR  EXTERIOR 

CONDITIONING  LIGHTS  EXTERIOR LIGHTS SYSTEM LIGHTS 
EXTERIOR  SYSTEM SYSTEM SYSTEM
LIGHTS 
SYSTEM TRANSMISSIONS 
B SYSTEM
HEADLIGHTS 
B LT GRN SYSTEM TO START SWITCH 
A86K (DIAGRAM 1 OF 3)
A WHT
A86­GS INTERIOR LIGHTS 
POWER SOURCE  SYSTEM
RECEPTACLE
B 1090
D WHT START SWITCH
A86­GS
LT GRN

DK BLU
A62TA
A84A

C WHT
A86­GT
START ACC START ACC START
A WHT CIGAR  ACC
A11­GRD LIGHTER  RUN OFF RUN OFF RUN OFF
GROUND  POWER
ADAPTER
B

D
LT BLU C

A
PNK

A12
A17

WHT

PNK
FROM FUSE 

A13

A15
RED
A11­G1 BLOCK 10 
RIGHT SIDE CAB  (DIAGRAM 2 OF 3)
A84­GA
WHT

GROUND STUD C
B
FROM FUSE 
B4 LT BLU

BLOCK 11 

A14BJ
B WHT C 1090

B3 RED
STARTING/CHARGING  (DIAGRAM 1 OF 3)
A12

A86­GT
SYSTEM
A LT GRN
A86M TO IGNITION 
ACCESSORY  86 30 D RELAY 1 
POWER SOURCE  RELAY
(DIAGRAM 3 OF 3)
2 POST
E WHT 85 87
LT BLU A3

A84­G
LT BLU A4
A12­GR

A WHT
A12AD

LT BLU
A12AD
A11­GRD
GROUND 
ADAPTER

WHT
A11­G1
RIGHT SIDE CAB 
GROUND STUD
FUSE 
G LT BLU FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  BLOCK 
A12­GR K F B J1 A E 4
20A 5A 5A 15A 20A 15A
A WHT
A11­GBB
GROUND SPLICE 
A86F
LT GRN

A64
YEL

PACK 7
A78V
LT BLU

LT BLU

LT GRN

LT GRN
A86
A12BBC

A12C

WHT
A11­G1
RIGHT SIDE CAB 
GROUND STUD
EXTERIOR LIGHTS  POWER  HEADLIGHTS  SOUND  MIRRORS 
SYSTEM WINDOWS SYSTEM SYSTEM SYSTEMS SYSTEM
370410

Fig 2: Power Distribution Circuit (2 of 3)

BATTERY 
FROM B1  STUD TO IGNITION  TO ACCESSORY 
(DIAGRAM  A E RELAY 2  C RELAY 
1 OF 3) (DIAGRAM 3 OF 3) (DIAGRAM 1 OF 3)
B2
A14EB

A14BJ
RED

RED

RED
A14W
A14F
RED

A14C

A14D
A14A

A14B
RED

RED

RED

RED

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A14C

A14D
A14A

A14B
RED

RED

RED

RED
FUSE 
FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  CIRCUIT  FUSE  FUSE  BLOCK 
A E J K B F C G L BREAKER  D H 10
20A 30A 5A 20A 15A 15A 15A 15A 10A M 15A 30A
10A

A94P
A83V

GRY

A81V

GRY

GRY
A39V

A68V
A50A
VIO
LT GRN

LT GRN

DK BLU

DK BLU

BRN
A63

A50
A85
A14CL

A97DL

YEL

YEL
RED

A63D

A63E
A63A
DK BLU

DK BLU
POWER  ANTI­LOCK  INSTRUMENT  COMPUTER  DOOR  HORNS  POWER  ENGINE  HEADLIGHTS  INTERIOR  EXTERIOR 
WINDOWS  BRAKES  CLUSTER  DATA LINES  LOCKS  SYSTEM WINDOWS  ACCESSORIES  SYSTEM LIGHTS  LIGHTS 
SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM

A14FC

A14FD
A14FB
A14FA
RED

RED

RED

RED
FUSE 
FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  BLOCK 
E A J K B F C L G M D H 7
15A 20A 15A 30A 15A 15A 20A 30A 20A 5A 20A 20A
A70E

A70B
A86V

GRY

A71BBV

A12BBV
A75A

A60HA
ORG

ORG

ORG

ORG
A54VT

A56VT

A94VT

A57VT
LT GRN

BRN

LT GRN

LT GRN

LT BLU

LT BLU
A75
RED

A60HB
ORG
SOUND 
SYSTEMS EXTERIOR LIGHTS SYSTEM AIR  EXTERIOR LIGHTS SYSTEM
CONDITIONING 
SYSTEM

FROM IGNITION 
RELAY  I
(DIAGRAM 3 OF 3)

PNK FROM IGNITION 
H
A13DA

A13DA
RELAY 2 
A13D

A13C
PNK

PNK

PNK
(DIAGRAM 3 OF 3)
A13CA
PNK

FUSE  FUSE  FUSE 

FUSE  FUSE  FUSE  FUSE  FUSE  FUSE  BLOCK  FUSE  FUSE  FUSE  BLOCK  FUSE  FUSE  FUSE  BLOCK 
D H M L C G 8 L C G 4 L C G 1
10A 15A 10A 5A 15A 10A 10A 5A 5A 10A 15A 10A
GRY

LT GRN

GRY
A39A

A94KA
A75BC

PNK

VIO

TAN
A95
A13D

A97CR
A24AM
GRY

LT GRN
A78H

A71

A71

A49B
A13EM
ORG

ORG

GRY

GRY

GRY
PNK

A49A

A94CT

A97CRB

A95A

A95BA
TAN

TAN
PPL

PPL
A97CRC
A75BM

A75BP
A75BK
LT GRN

LT GRN

LT GRN

LT GRN

LT GRN
A75BJ

A75BR

ANTI­LOCK  MIRRORS  EXTERIOR LIGHTS  ENGINE  TRANSMISSIONS  EXTERIOR  PNEUMATIC  CRUISE 

AIR CONDITIONING SYSTEM BRAKES  SYSTEM SYSTEM CONTROLS  SYSTEM LIGHTS  SYSTEMS CONTROL 
SYSTEM SYSTEM SYSTEM SYSTEM
ENGINE  ENGINE 
ACCESSORIES  ACCESSORIES 
SYSTEM SYSTEM

370411

Fig 3: Power Distribution Circuit (3 of 3)

FROM IGNITION 
RELAY  J
(DIAGRAM 3 OF 3)
AF13EB
A13EA

A13EA
A13E
PNK

PNK

PNK

PNK

AF13EB
PNK

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AF13EB
A13EA

A13EA
A13E

AF13EB
PNK
FUSE  FUSE 
FUSE  FUSE  FUSE  BLOCK  FUSE  FUSE  FUSE  FUSE  FUSE  BLOCK 
M D H 4 M D H B F 1
15A 25A 10A 5A 10A 5A 15A 5A

A92E

A92B

A49VB

2M A13BB
GRY

GRY

GRY
A44V

A97ALV
PNK

PNK

A49VA

PNK
A13DF
VIO

VIO
TAN

TAN
A97CL

YEL
A66D

A13TC

1M
2
GRY

GRY
A49VAA

F
A49VL

1
PNK

WHT H
K13

M97­GF
ENGINE  HEADLIGHTS  TRANSMISSIONS  ENGINE  ENGINE 
CONTROLS  CONTROLS  ACCESSORIES  TRANSMISSIONS 
SYSTEM SYSTEM ENGINE 
SYSTEM SYSTEM SYSTEM SYSTEM
CONTROLS 
SYSTEM

TRANSMISSIONS 
SYSTEM
FROM START SWITCH 
D
(DIAGRAM 1 OF 3)

PNK
A13
FROM FUSE  FROM FUSE 
G BLOCK 5  E BLOCK 10 
(DIAGRAM 1 OF 3) (DIAGRAM 2 OF 3)
A14HC

A14EB
A13M
A13F

RED

RED
PNK

PNK
H2 G2 FROM FUSE  H3 J3
F BLOCK 11 
86 30 IGNITION  86 30 IGNITION 
RELAY (DIAGRAM 1 OF 3) RELAY 2

85 87 87A 85 87 87A
A14EA
G1 H1 J4 H4
A13N
A13F
PNK

PNK

PNK
A13GE

A13E

A13­GM
PNK

PNK

PNK
WHT

WHT
A13D

A13C
H1 J1

86 30 IGNITION 
RELAY 1

TO FUSE  85 87 87A
J BLOCK 4 
(DIAGRAM 3 OF 3) J2 H2
PNK
A13A
A13­G
WHT

TO FUSE 
A13AA

J WHT
PNK

I BLOCK 4 

A13AA
A13GE
(DIAGRAM 2 OF 3)

PNK
A WHT H
A11­GBA FUSE 
GROUND SPLICE  TO FUSE 
FUSE  FUSE  FUSE  FUSE  CIRCUIT  FUSE  BLOCK 
PACK 6 BLOCK 8 
B F K A BREAKER  J 8
(DIAGRAM 2 OF 3)
15A 20A 5A 15A E 10A
20A
A105R

A55S
A95A
LT GRN

TAN

LT GRN

LT GRN
A105L

A13CL
RED

A82C
A82B
GRY

GRY

WHT WHT
A11­G1 A11­GB
RIGHT SIDE CAB 
GROUND STUD
2M

M 2
GRY
A82C

A WHT 34 1701
A11­G CHASSIS 
SEATS  EXTERIOR  SEATS  EXTERIOR  INSTRUMENT 
E WHT FRONT END 
SYSTEM LIGHTS  SYSTEM LIGHTS  CLUSTER 
A13­G CONNECTION
SYSTEM SYSTEM SYSTEM
F WHT
A13­GM
GROUND SPLICE 
PACK 5

370412

 
 
POWER DOOR LOCKS

Fig 1: Power Door Locks Circuit

HOT AT
WHT A11­GB A11­GBA WHT

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WHT A11­GB A11­GBA WHT ALL TIMES

FUSE 
FUSE 

A
BLOCK 10
GROUND  B
RIGHT CAB  ADAPTER  15A
GROUND STUD (458M)

LT GRN
A81V
WHT E
A81­GC
A81A LT GRN
LT GRN A81VA A81VA LT GRN
87 A81A LT GRN 87
85 LT GRN A81V A81V LT GRN
A81V LT GRN 85
LT GRN A81L D A81N LT GRN
86 LT GRN A81M 1048F A81P LT GRN 86
LT GRN A81E A81K LT GRN
LT GRN A81D A81H LT GRN
30 30
WHT A81­GA A81­GB WHT
87A 87A
POWER DOOR  POWER LOCK/ 

A81­GD WHT
A

A
1048F

1043F

1043F
C
LOCK RELAY UNLOCK RELAY

1 LT GRN 81M A81L LT GRN 1

3 LT GRN 81N A81P LT GRN 3

E
1043F

6 6
(NOT USED) (NOT USED)
WHT

4 4
(NOT USED) (NOT USED)
A81­GD

5 5
(NOT USED) (NOT USED)

2 WHT 81­GC A81­GD WHT 2

1048F

LEFT POWER  RIGHT POWER 
LOCK SWITCH LOCK SWITCH
B

LT GRN

LT GRN

LT GRN

LT GRN
A81K

A81E
A81F

A81J

B WHT A81­GG

A WHT A11­GE
E

B
D
F

1048F

1043F
A LT GRN

B LT GRN

B LT GRN

A LT GRN

GROUND 
ADAPTER 
81K

81E
81F

81J

(455M)
A11­G1
WHT

NCA

NCA

NCA

NCA

LEFT SIDE 
CAB GROUND
M M
LEFT POWER  RIGHT POWER 
370396 LOCK MOTOR LOCK MOTOR

 
 
POWER MIRRORS

Fig 1: Heated Mirrors Circuit

HOT W/
IGNITION RELAY 2

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IGNITION RELAY 2
ENERGIZED
FUSE 
FUSE  BLOCK 8
C
15A

LT GRN
A78H
HEATED MIRROR 
SWITCH

A78H LT GRN 2

GROUND 
ADAPTER

WHT WHT A H A11­GUG WHT 1

A11­G A11­GU
RIGHT SIDE CAB  A78JK LT GRN 3
GROUND STUD
INTERIOR  A62MH DK BLU 10
LIGHTS 
SYSTEM
A62­GMH WHT 8

C
GROUND 
SPLICE 
PACK 3

A WHT WHT
A11­GFS A11­GF
LEFT SIDE CAB 
GND STUD

LEFT MIRROR  RIGHT MIRROR 
LIGHT LIGHT
WHT YEL B BRN E BRN BRN E BRN B YEL WHT
A58J A58J A58K A58L
WHT GRN E LT GRN D LT GRN LT GRN D LT GRN E GRN WHT
LEFT HEATED  A78B 1050M A78J A78K 1054M A78A RIGHT HEATED 
MIRROR MIRROR
WHT A WHT WHT WHT WHT A WHT
A11­GBM A11­GZ A11­GAE A11­GY
LEFT HEATED,  RIGHT HEATED, 
LIGHTED &  LIGHTED & 
MOTORIZED  MOTORIZED 
A11­GFS

MIRROR MIRROR
WHT

LEFT SIDE 
CAB GND STUD

370424

Fig 2: Power Mirror Circuit
HOT W/
ACCESSORY RELAY
ENERGIZED
FUSE 
FUSE  BLOCK 4
E
15A

F1

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F1
LT GRN A78V

A2
POWER 
MIRROR 
SWITCH

B1

A1
B2
B4

A4
A3

B3

A78­G
A78E
LT GRN

LT GRN

LT GRN

LT GRN

LT GRN

DK BLU
A78D

A62BD
A78A

A78F
A78C

WHT
C
INTERIOR 
LIGHTS  GROUND 
LT GRN SYSTEM SPLICE 
PACK 2 
(455M)

A
A11­GE
WHT
A11­GD
LT GRN

LT GRN

LT GRN

LT GRN

LT GRN

LT GRN
A78EA

A78EB
A78C

A78D
A78A

WHT
A78F
B

B
A

A
C

L/R UP/ UP/ L/R

M AXIS M DOWN M DOWN M AXIS
AXIS AXIS
LEFT SIDE 
CAB GND 
STUD
MIRROR MOTOR CONNECTION MIRROR COURTESY 
LIGHT CONNECTION
370423

 
 
POWER SEATS

Fig 1: Power Seats Circuit

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HOT W/ IGNITION
RELAY 1 ENERGIZED
FUSE 
BLOCK 8
FUSE  FUSE 
B A
15A 15A

LT GRN

LT GRN
A105R

A105L
BLK A A BLK
HI
HI

LO LO
WHT B B WHT
1332 1331
PASSENGER  DRIVER 
HEATED SEAT HEATED SEAT

J WHT A105­GR A105GL WHT C

A WHT A11­GRD WHT A11­G A11­G1 WHT A11­GY WHT A

GROUND  LEFT CAB  GROUND 

SPLICE PACK 4  GROUND STUD SPLICE PACK 2 
(453M) (454M)
LEFT CAB 
GROUND STUD

370426

 
 
POWER WINDOWS

Fig 1: Power Windows Circuit

HOT W/
HOT AT ACCESSORY RELAY
ALL TIMES ENERGIZED
FUSE  FUSE 
FUSE  BLOCK 10 FUSE  BLOCK 4

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FUSE  BLOCK 10 FUSE  BLOCK 4

F B
20A 5A

A83V
LT GRN

LT BLU
A12C
87 LT GRN A83C C LT GRN A83C A83E LT GRN 4 DOWN
1034F

30 LT GRN A83V A83­GB WHT 1

85 WHT A12­G UP
A83L LT GRN 2
86 LT BLU A12C
A83M LT GRN 5
LEFT/RIGHT POWER 
WINDOW RELAY
DRIVER SIDE RIGHT 
POWER WINDOW SWITCH

C WHT A12G

A WHT A11­GBA WHT A11­GA

GROUND SPLICE  RIGHT CAB 
PACK 6 GROUND 
STUD

C WHT A83­GA

A83­GA
A WHT A11­GE WHT A11­GD

WHT
GROUND SPLICE  LEFT CAB 
PACK 2 GROUND 

A
1034F
STUD

A83­GA
WHT

5 LT GRN A83H

2 WHT A83­GC

UP

1 LT GRN A83F

4 LT GRN A83N
DOWN
DRIVER SIDE 
LEFT POWER 
WINDOW SWITCH
LT GRN

LT GRN

LT GRN

LT GRN
A83M
A83N

A83F

A83L

B A B A
NCA

NCA

NCA

NCA

M M

LEFT WINDOW  RIGHT WINDOW 
MOTOR MOTOR

370395

 
 
RADIO

Fig 1: Radio Circuit

HOT W/ ACCESSORY HOT AT
RELAY ENERGIZED ALL TIMES
FUSE  FUSE 

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FUSE  FUSE 
BLOCK  BLOCK 
FUSE  4 FUSE  7
A E
20A 15A

6 DK BLU A62K

A86
LT GRN

LT GRN
A86V
CLUSTER 

LT GRN
A62K
CONN

1
INTERIOR LIGHTS SYSTEM

2
A11­G WHT
3 BRN A54D EXTERIOR 
LIGHTS 
RIGHT SIDE CAB 
SYSTEM
GROUND STUD
4 LT GRN A86

5 A11­GRD WHT A

6 DK BLU A62RA A86­G WHT G

7 LT GRN A86V GROUND SPLICE 

PACK 4

8 WHT A86G

9 LT GRN A867 C NCA A NCA

10 LT GRN A86U D NCA B NCA

11 LT GRN A86U E RIGHT 

FRONT 
SPEAKER
12 LT GRN A86W F
INFO NOT 
13 LT GRN A86X G AVAILABLE

14 LT GRN A86Y H

15 LT GRN A86R A NCA A NCA

16 LT GRN A865 B NCA B NCA

428
RADIO LEFT 
FRONT 
SPEAKER

370433

 
 
STARTING/CHARGING

Fig 1: Charging Circuit

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POWER 
DISTRIBUTION 
SYSTEM

RED
RED
RED
RED
BLK

BLK
BLK

BLK
BLK

BLK
BLK

BLK
BLK
BATTERIES

BLK
BLK

BLK
BLK

BLK
BLK

BLK
BLK

BLK
BATTERY  FRAME 
GROUND GROUND

RUST RUST
K2A FUSIBLE LINK
W/ I GAUGE 
CHARGE  RED RUST RUST
W/ LEECE  K2 K2B FUSIBLE LINK
NEVILLE RUST RUST
K2C FUSIBLE LINK

W/ 2  RUST RUST

GAUGE  K2A FUSIBLE LINK
WHT K2­G

CHARGE 
RED K2

RED RUST
W/ BOSCH
K2 K2B FUSIBLE LINK
RUST
RUST
RUST
RUST
RUST
WHT K2­G

BLK
BLK

BLK
G

STARTER
B+

ENGINE 
BLOCK 
GROUND

ALTERNATOR

370387

Fig 2: Starting Circuit
HOT AT
START  ALL TIMES A11­GV (OR A11­GU) WHT A
START SWITCH GROUND RELAY 70 WAY CAT 
SWITCH FUSE 
FUSE  TCM CONNECTOR A11­GV WHT K
BLOCK 
D 11
K

ACC 25A GROUND ADAPTER (451M)

1
8

1268

GROUND 
START OFF
RUN ADAPTER  A11­GV WHT A
(457M)
A11­GW WHT K
87
86

30

85
A15
RED
B

A
A11­GRE

GROUND 
WHT
K17SI
PNK

K92A
PNK

PNK
TAN
A17

K17
A15
RED

ADAPTER (450M)
A11GS
GRY

GRY
A44A

PNK
A17F
A17­G
WHT

WHT
A44

A11­GW WHT A
A11­GX (OR A11­GY) WHT K
A11­G
WHT
G
U
E

HEAD­  GROUND 
LIGHTS 
B

ADAPTER (449M)
2M

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A11­G
WHT
GROUND 
LIGHTS 

B
ADAPTER (449M)

2M
A11­GB
START  SYSTEM RIGHT SIDE  A11­GX

WHT
FEED  CAB GROUND  (OR A11­GY) WHT A

PNK
A17A
PNK
K17DA
K92F
TAN
ADAPTER STUD
RIGHT SIDE  A17FA­GH PNK D
CAB GROUND 

PNK C
A17­G WHT E
STUD

A17F
A17B
PNK

PNK
A17D
GROUND ADAPTER (448M)

1 A17DA PNK B
W/ ALLISON 
TRANSMISSION A17DC WHT C

A17DC
A17A
WHT
PNK
19 GRY
STARTER INTERLOCK 
422M A44
SWITCH
CLUSTER
1 2

3 YEL WHT (OR PNK) F5

J1939+
K5V(+) COMPUTER DATA  A17DC (OR A17A) 85
EXTERIOR 
2 GRN LINES SYSTEM ORG
J1939­ LIGHTS  1
K5V(­) SYSTEM A17FB A17FA­GH PNK E3
26 PNK E PNK 29 PNK A17FA PNK 86
LATCH
K17EM M17EM A17EM A17DB PNK F3
32 PNK G PNK 44 PNK 30
START­EN+
K17EA M17EA A17EA L A17B PNK E4
4 WHT A WHT 26 WHT 2M 2 87
START­EN­
K17­GA 1190 M17­GA 471 A17­GA STARTER RELAY
W/ MANUAL 
EATON GEN3 TCM
TRANSMISSION

85 2 WHT K141 TAN D1

A17­GA
TRANSMISSIONS 
86 5 PNK SYSTEM
1 W/ CAT TRANSMISSION 
A17EA K169 BLK A1
2 W/ MANUAL TRANSMISSION
30 1 PNK 107M
A17A (INFO NOT 
PNK
AVAILABLE)
4 PNK A17X A17B PNK L K17B PNK 27 K323CM DK BLU G1
87
A17EM 2M 2
STARTER  RUST K2A RUST K17C PNK 26 K323NO DK BLU F1
ENABLE RELAY
100 108M
FUSIBLE LINK
RELAY 2
W/ I GAUGE CHARGE  RED K2 RUST K2B RUST
W/ LEECE NEVILLE VEHICLE 
FUSIBLE LINK INTERFACE MODULE
RUST K2C RUST

FUSIBLE LINK
RED K2
B

ALTERNATOR RUST K2A RUST

W/ 2 GAUGE CHARGE  FUSIBLE LINK
W/ BOSCH RED K2 RUST K2B RUST

FUSIBLE LINK

POWER 
DISTRIBUTION 
SYSTEM
RED
RED
RED
RED
BLK

BLK
BLK
BLK
BLK

BLK
BLK

BLK
BLK

BATTERIES
BLK

BLK
BLK

BLK
BLK

BLK
BLK

BLK
BLK

K17C

K17C

K17C
RUST
RUST
RUST
RUST
RUST
PNK

PNK

PNK
BLK

BLK
BLK

STARTER
S
G

B+

BATTERY  FRAME 
GROUND GROUND

370386

 
 
TRANSMISSION

Fig 1: Differential Lock Circuit

HOT W/ IGNITION HOT W/ IGNITION
RELAY ENERGIZED RELAY ENERGIZED
FUSE  FUSE 
BLOCK  BLOCK 
FUSE  4 FUSE  1 WHT A11­G WHT
C H

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C H
5A 5A
RIGHT SIDE CAB 
WHT A11­G GROUND STUD

RIGHT SIDE CAB 
GROUND STUD A11­GX WHT A

GRY
GRY

GRY
GRY
A49­GA WHT B

A49B
A49A

A49VB
A49VA
A WHT A11­GRE SPLICE PACK 
(448M)

G WHT A49­G

SPLICE 
PACK 
(457M) A49GB WHT 87

A GRY A49C A49C GRY 85

B GRY A49E A49GB WHT

(INFO NOT AVAILABLE)
A49­GA WHT 86
C GRY A49D
(INFO NOT AVAILABLE)
A49G GRY
D WHT A49­G 30

E GRY A49B DIFFERENTIAL LOCK 

CONTROL RELAY

F GRY A49A

DIFFERENTIAL LOCK  6
(NOT USED) 
SPEED SWITCH 3
(NOT USED)

A GRY N49A 45 GRY A49AA A49AA GRY 2

1701F 1701­45

B WHT N49­GB
WHT N49­GA A49G GRY 5
RIGHT REAR 
AXLE DIFFERENTIAL 
LOCK WARM LIGHT
A49VL GRY 7

WHT N49­GA A49AC GRY 9

E
WHT N49GA
A62DF DK BLU 10
A GRY N11­GB INTERIOR 
LIGHTS 
A62­GDF WHT 8
SYSTEM
CHASSIS 
GROUND 
ADAPTOR  A49GA GRY 4
PACK (8809)
A49CB GRY 1

GRY N11­GB
DIFFERENTIAL LOCK 
ENABLE SWITCH
GROUND 
AT DASH 
(9717B)

A49S GRY A
B WHT N49­GC

A49GS WHT B
A GRY N49 50 GRY A49
DIFFERENTIAL 
1701F 1701­50 LOCK SOLENOID
FORWARD REAR 
AXLE DIFFERENTIAL 
LOCK WARM LIGHT

A49GS WHT B
A11­GW WHT A
86 GRY A49GA
SPLICE PACK 
(449M)
GRY A49CB
85 GRY A49DA
A11­GW WHT K
30 GRY A49VB A11­GV WHT A

GRY A49S SPLICE PACK 

87
(450M)
GRY A49DB
DIFFERENTIAL 
LOCK LATCH

2 GRY A49DB A11­G WHT

1 GRY A49DA
RIGHT SIDE CAB 
DIODE CONNECTOR
GROUND STUD

Fig 2: Transmission Circuit, Caterpillar Transmission (1 of 2)

TCM  HOT W/ HOT W/

IGNITION RELAY IGNITION RELAY 2
RED
N14

FUSE
ENERGIZED ENERGIZED
10A FUSE  FUSE 
BATTERY BLOCK 1 BLOCK 8
FUSE B FUSE G
15A 10A
N14B

N14Y
RED

RED

PNK

RED
RED
N14C
N14
RED

A13BB

A71

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A13BB

A71
9261
C
B

2M 2
1267
1 RED K14
2
3 RED K14A
4
5
6
7 PNK K3
8
9
10
11
12
13
14
15
16
17 WHT K10 B WHT N14­GB
18
19 WHT K10A C WHT N14­GC
20 1266 9260
21

WHT
22
23

N14­GF
24

24­WAY CAT  A71B RED

A2
TCM CONNECTOR EXTERIOR  A71A RED
BATTERY 
LIGHTS SYSTEM
NEGATIVE
A71 RED B1
1 PNK K17
STARTING/CHARGING SYSTEM
2
3 A71FB RED A1
STARTING/CHARGING SYSTEM
4
5 TAN K92 A TAN A92 TAN B2
6 2 2M
7 PNK K17SI REVERSE 
STARTING/CHARGING  RANGE RELAY
8 TAN K92A
SYSTEM
9
10
11
12
13
14
15
16 A92TRL TAN
1
17
18
19
20
21 GRY A44­G TAN A92­T
22 WHT K44­G D GRY A44
23 2 2M
24
25 INTERIOR LIGHTS 
26 SYSTEM

27
28
29 GRY K44 Q GRY
(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)
30 190 190M
A62­GPT

A92TRL
DK BLU
A62­PT

31
WHT

A92T
TAN

TAN

32
A44C

A44T
A44

33 8 10 3 1 6 4 5 2 7 9
34
GRY

GRY
GRY

35

70­WAY CAT 
D

TCM CONNECTOR

CAT TRANSMISSION 
PARK SWITCH TRANSMISSION RETARDER ON/OFF SWITCH
(IF EQUIPPED)

Fig 3: Transmission Circuit, Caterpillar Transmission (2 of 2)
HOT W/
HOT AT IGNITION RELAY
ALL TIMES ENERGIZED
FUSE  FUSE 
BLOCK 5 BLOCK 4
FUSE D FUSE H
10A 10A

A92­GT TAN H
A92E
TAN
A92C

TAN

A11­GY WHT A
101

GROUND 
J

ADAPTER 
(454M)

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A11­G1 WHT

K14

K14
RED

RED
LEFT SIDE CAB 

101
GND STUD

F
35
36 A SHIELD
37
38 TAN K92TRHM I TAN A92TRHM HEAT 
39 SHRINK
40
41 K5A(+) YEL 1
42 TAN K92TRHL R TAN A92TRHL TAN A92­GTA G K11 WHT 2
43 2 2M 101
44 K13 PNK 3
45 4
46 (NOT  B SHIELD A SHIELD 5
47 USED) 101 INTERIOR LIGHTS  K62 DK BLU 6
48 SYSTEM
49 K5A(­) GRN 7
50

A92­GTB
51 A K92A TAN 8
(NOT USED)
52 101 9
53 10

TAN
54
55
56 K14 RED 11
57 H K11A WHT 12
58 101 1194
59
60 K92A TAN A
61 K92B TAN B
62 K5(+) YEL C
COMPUTER DATA 
63 K5(­) GRN D
LINES SYSTEM 
64
65 INTERIOR  K62 DK BLU E
66 LIGHTS SYSTEM
67 YEL K5VA(+) K13 PNK F
68 LT GRN COMPUTER DATA  K11 WHT G
K5VA(­)
LINES SYSTEM
69 K11A WHT H
70 I
K14 RED J

70­WAY CAT  101A
TCM CONNECTOR CAT SHIFTER 
CONNECTOR

TAN A92TRL
1
K5(+)
K5(­)

INTERIOR LIGHTS 
SYSTEM
GRN
YEL

K5B(+)
K5B(­)
(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)

(NOT USED)

A92TRHM

101
C
D
A62­GVD

GRN
A92TRH
DK BLU

YEL
A62RT
WHT

TAN

TAN

8 10 1 6 4 5 2 7 9 3 C A
A5S(+)
A5S(­)

NCA

NCA
GRN
YEL
B
L

SPLICE  J1939 
PACK  TERMINATING 
TRANSMISSION RETARDER SELECTOR SWITCH (1025) RESISTOR
(IF EQUIPPED)

Fig 4: Transmission Circuit, W/ Allison Transmission (1 of 2)
VEHICLE INTERFACE MODULE
BODY BACKUP  HOT W/ IGNITION
LIGHT RELAY RELAY 2 ENERGIZED RELAY 1 RELAY 4 RELAY 5 RELAY 6
FUSE 
FUSE  BLOCK 
G FUSE
8 10A
10A
ORG 87

ORG
A71
A71AC

REVERSE 
108M

107M

108M

107M

108M

107M

108M

107M

108M
A1

B1

F2

E3

E2

D2

B1

A3
B2

A2

F3

D1

E1

C2

F1

C1

LIGHT
NCA B ORG H ORG 20 BLK
(NOT
USED)

(NOT USED)
(NOT
USED)

K71A 2M 2 K71A K313NO

K332CM

K325CM
WHT
K165

K104

K145

K124
TAN

LT BLU

TAN
100F K332NC
TAN

RED

TAN
K325NC
LT BLU

RED
K163C

NCA A ORG G ORG 21 LT BLU

K71 2M 2 K71 100 K313CM
25

23

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25

23
1
2 YEL K102 12
(NOT USED)
3 PPL K103A 100F
IN SIG RET
4 TAN K104 PPL
OUTPUT 2
5 ORG K105 (OR K105P) 18 GRY K49C (OR K49L) D TAN (OR GRY) A44­G K103B
INPUT 4
6 100F 100M 2
7 PPL 8 TAN K92­GU TAN
1
8 GRN K108 COMPUTER DATA  K103C 100 K92­GV
J1939 (­)
9 GRY K109A LINES SYSTEM GRY
ECU GND 2
10 PNK K110A PNK
ECU PWR 3
11

K24CL GRY
K24BL GRY
K92­GT TAN
12
13

100F
17

24
14

851M
15

K92RS 100M
16
17 LT BLU K117 16 TAN K92TN

K92­GS

851F
C

A24BL GRY D
TAN

TAN
INPUT 10
18 100F 100M

A24CL GRY
A92­GT TAN
19
20
ALLISON 
21 LT GRN K121 19
INPUT (NOT USED) CONNECTOR
22 100F
23
INFO NOT 
24 WHT K124
OUTPUT 5 AVAILABLE
25 TAN K125 TAN
SPEEDO MTR 4
26
27
28 YEL K128 COMPUTER DATA 
J1939 (+)
29 LT GRN K129 LINES SYSTEM 4 TAN K92CT E
SHIFT SELECT (NOT USED)
30 WHT K130 100F 100M 2 WHT
OUTPUT 1 5
31
32
33 A44­G TAN (OR GRY) A92T TAN 2
34 YEL K134 11 A92TRHL TAN A92TRL TAN 3
CHECK TRANS (NOT USED)
35 100F
36 TRANSMISSION 
RETARDER 
37 ON/OFF SWITCH
38
39
40
41 TAN K141 TAN
NEUTRAL ST 6
42
43
44
45 RED K145
OUTPUT 3
46
47 A92TRH TAN 2
48
49 TRANSMISSION 
50 RETARDER 
SELECTOR 
51
SWITCH
52
53
54
55
56
57 WHT K157 6 GRY K24BD A GRY A24BD
INPUT 12 INFO NOT AVAILABLE
58 851M 851F
59
60
61 ORG K161 7 TAN K92AA I TAN K92AA TAN
INPUT 7 7
62 YEL K162 13 TAN K92PS R TAN A92TRHL
INPUT 9
63 YEL K163A 100F 100M 2 K163 YEL
IGN POWER 8
64 LT BLU K164 15 TAN K92ML
OUTPUT 6
65 TAN K165 100F 100M
REV WARNING
66
67
68
69 BLK K169 BLK
ECU GND 9
70 DK BLU K170 DK BLU
ECU PWR 10

TRANSMISSION 
CONTROL MODULE

Fig 5: Transmission Circuit, W/ Allison Transmission (2 of 2)
VEHICLE  HOT W/
RETARDER  RELAY 2 RELAY 3 IGNITION RELAY HOT AT
ON/OFF  HOT W/ INTERFACE 
IGNITION RELAY ENERGIZED ALL TIMES
SWITCH MODULE
ENERGIZED FUSE FUSE  FUSE 
FUSE  10A TCM  FUSE  BLOCK  FUSE  BLOCK 
BLOCK  FUSE H 4 D 5
FUSE  10A 10A
1
B
15A
10A
108M

107M

108M

107M

108M

107M

108M
2

F1

G1

D1

F3
C2

F2

D2
A1

K1
K2

A2
E2
E1
B2

H2

J1
J2

A92B
TAN

TAN
A92C
(NOT USED)
BLK

BLK
BLK

BLK
PNK
(NOT USED)

WHT
K92AA

DK BLU

DK BLU

TAN

DK BLU
TAN

TAN
TAN
TAN
K92­GU

TAN

N14B

N14Y
RED

RED
PNK
A13BB

K343A

K125A

K336A
K323CM
K323NO

K141

K130
K169

K109
K110
K170
K343C

K336C

101

BATTERY
2M

F
A
2

100F

1267
100F
30
31

28
F

29
2

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100F

1267
100F
30
31

28
F

29
2

B
TAN
K92­GU

TAN

TAN
K92C
(OR K92AB)
PNK

WHT 9261
(OR K13)

K109A GRY
K110A PNK
TAN
TAN

K92A TAN
K92B TAN

TAN
STARTING/ 
CHARGING 

N14­GF
K92
K92­GC
K92­GD
SYSTEM

K92B
K13BB
TAN
1
K92­G TAN B WHT
GRY 9260 1266 N11­GB
2
PNK
3

100M
K97AJ PPL 12
VSS­H
K97AK PPL 13

TAN
TAN
VSS­L

5
100F
1 2
ENGINE SENSOR 
INTERFACE

TAN
TAN

TAN
TAN
YEL
K163
K97AK PPL B
K97AJ PPL
A
TAN K125B 3 K97AJ1 VIO
100F
SPEEDO 
SENSOR

TAN K125 K92C TAN F

4

K92AB TAN B

K92D TAN G
WHT
5
INTERIOR LIGHTS  K62 DK BLU E
SYSTEM
K92A TAN A

K5­ GRN D
COMPUTER DATA 
LINES SYSTEM K5+ YEL C

ALLISON SHIFTER

TAN
6

K92C TAN 13
1  W/ TRAILER SOCKET  BATT

2  W/O TRAILER SOCKET K92B TAN 12

IGN SENS

K92D TAN 5
GND

INTERIOR LIGHTS  K62 DK BLU 3

DIM INPUT
SYSTEM
K92A TAN 11
DIR SIG
TAN
TAN

TAN
TAN
K5A­ GRN 15
J1939 LO
COMPUTER DATA 
2 1 LINES SYSTEM K5A+ YEL 8
TAN
TAN

J1939 HI
K92A
K92D

SHIFT SELECTOR

TAN
A
G

101

7
A92A TAN 41 M92A TAN A ALLISON SHIFT 
YEL 1701F 1701M DIRECTION CONNECTOR
8

A92D TAN H
A11­G1 WHT A11­GY WHT A

GROUND 
BLK ADAPTOR (454M)
9
DK BLU
10
A11­G1 WHT A11­G2 WHT

LEFT SIDE CAB 
GROUND STUD

Fig 6: Transmission Circuit, W/ Eaton Ultrashift Gen 3 Transmission

TRANS 
ECM 
FEED 
10A FUSE

BATTERY
N14B

N14Y
RED

RED

86 5 PNK A17EA

87 4 PNK A17EM
PNK A17X
STARTING/ 
87A
CHARGING 
1
1267B

PNK A17A SYSTEM

30
B

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1267B
30

B
85 2 WHT A17­GA

K14AT
RED
STARTER  A92P TAN 2
ENABLE RELAY INTERIOR 
LIGHTS 
A92MA TAN 4
SYSTEM

A92ET TAN A92ETA TAN 5

1
2 GRN K5V(­) A3V(­) BLK A3VC(­) BLK 6
J1939 (­) COMPUTER DATA  COMPUTER 
3 YEL K5V(+)
J1939 (+) LINES SYSTEM DATA LINES 
A3U(+) BLK A3UC(+) BLK 7
SYSTEM
4 WHT K17­GA A WHT M17­GA 26
START EN­
5 EATON 
6 AUTOSHIFT 
7 DISPLAY

8
9
10 BLK K98+ B BLK M98+ 42 A3EB (+) BLK
J1587 +
11 BLK K98­ C BLK M98­ 43 A3EC (­) BLK
J1587 ­
12
13
14
15
16 PARK 
BRAKE 
17
SWITCH
18 A92DL TAN C
19
20 TAN K92EG J TAN M92EG 32
MEIIR CONTACT
21 TAN K92EH K TAN M92EH 33 A92DM TAN D
MEIIR­

22 TAN K92EJ L
MEIIR+ (NOT USED)
23
24
25 TAN K92J D TAN K92J 31 A92EL TAN J3
CTRL (­) CTRL (­)
26 PNK K17EM E PNK M17EM 29
LATCH
27 GRN K98GN6 M TAN M98GN6 28 A98GN4(­) GRN F2
HIL (­) HIL (­)
28 YEL K98YL6 N TAN M98YL6 27
HIL (+) F1
29 A98YL4(+) YEL
HIL (+)
30
31 TAN K92ER F TAN M92ER 30 A92ER TAN C1
CTRL (+) CTRL (+)
32 PNK K17EA G PNK M17EA 44
START EN+
33 1190 471 A62Y DK BLU B3
INTERIOR LIGHTS  DIMM CTRL
34 SYSTEM
35 TAN K92ET TAN K92ETC H TAN M92ETC 45
IGNITION POWER ULTRASHIFT 
36 WHT K10­GE 1190 471 SELECTOR
GND
37
38 RED K14AT

EATON GEN 3 TCM
B
1266B
N11­GB
WHT
N14­GF
WHT

BATTERY 
GROUND

For transmission wiring diagrams, see TRANSMISSION WIRING DIAGRAMS article.

 
 
WIPER/WASHER

Fig 1: Wiper/Washer Circuit

HOT W/

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HOT W/
HOT AT IGNITION RELAY 1
ALL TIMES ENERGIZED
FUSE  FUSE 
BLOCK 11 FUSE  FUSE  BLOCK 8
M E
5A 20A

GRY

GRY
GRY
RIGHT SIDE CAB 

A102
GROUND STUD

A82B
A82C
WHT A11­GB

NCA B WHT I GRY

M87­GG A87­GG
M
NCA A GRY H GRY
M87MB 3M 3 A87MB
WASHER 
PUMP

12 GRY A87MB

10 GRY A102

4 GRY A82B M K82C GRY A

9 GRY A82F S K82F GRY B

6 GRY A82D N K82D GRY D

5 GRY A82E O K82E GRY E

TURN SIGNAL 
A11­GBB WHT A K A82­GC WHT T K82­GC WHT C
SWITCH
2 2M
GROUND  WINDSHIELD 
WHT

ADAPTOR  WIPER MOTOR
(452M)
A11­GB

RIGHT SIDE 
CAB GROUND 
STUD

370399

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