Service Manual

Electrical System
9-10
944E-42
GND_BUSSBAR
CAB_GND_STUD
WL4 WL4A
WL4B
WL4C
WL5
WL6
WL5A
LP5A
WL5B WL5C
WL5E
WL5D
WL6A
WL6B
WL6C
WORKLIGHTS ONLY
EG8
WLG5
WLG10
WLG9 WLG7 WLG6
WLG8
GH1J
GH2J
GH1H GH2H
GH3
GH4
PH1A
GH1B GH1A GH2B
GH2A
GHG2
GHG1
GHG
BPB
BPC
BPD
BPM
BPS
BPD1
BPC1
BPB1
BPM1
BPS1
BNP
BNW
BAT2P
BAT2N
GHG3
GH1
GH2
THG
THP
THS
SL
WLS
ML
WSL
OFF1
ON1
SWR
DS
DIS
DDS
RTS
THG1
THP1
THS1
ECM CIRCUIT
SL1
WLS1
DLP1 DLP
DLP2
DIAGNOSTIC INDICATORS
J87L
J87H
BN
BN
DIAGONSTIC PLUG
BPL1
BPL2
BPL2
CNH2
CNH3
CNH1
CNH4
CNL2
CNL3
CNL1
CNL4
CNH
CNL
CNS1
CNS3
CNS4
CNS2
CNS
CNS5
ENGINE J1939 CONNECTOR
(CONNECTS TO P3)
FUEL SHUTOFF POWER
FUEL PUMP GND
ECM
BNE
BNF
BNH
2
1
WORKLIGHT
SWITCH
7 2
5
6
38
1
WLO_8F
2
WLO_8F
3
WLO_8F
5
WLO_8F
6
WLO_8F
7
WLO_8F
8
sht 3 WL4
225
A
WLIGHT_BULK_2
B
WLO_BULK_2
230
12V 4.4A
WLO_BOOM
12V 4.4A
WLO_LF
12V 4.4A
WLO_RF
12V 4.4A
WLO_LR
12V 4.4A
WLO_RR
WLO_LR_P
P
WLO_LR_N
N
WLO_RR_P
P
WLO_RR_N
N
WLO_LF_P
P
WLO_LF_N
N
WLO_RF_P
P
WLO_RF_N
N
WLOC_2M
A
WLOC_2F
A
WLOC_2M
B
WLOC_2F
B
WL0_2M
A
WLO_2F
A
WL0_2M
B
WLO_2F
B
235
240
245
A
B
125
AMPS
GH_FUSE_1
A
B
125
AMPS
GH_FUSE_2
3A 3A
3A 3A
P10
A
P11
A
P10
B
P10
F
P11
B
P11
F
GRID
HEATER 1
GRID
HEATER 2
GH1_COIL GH2_COIL
ENG_GND
sht 1 GH1P
sht1GH2P
8 9
7
BATT2-12V
GH1_NO GH2_NO
sht2PH1A
P1
W
P
H
F
E
S
M
D
C
B
A
sht 1 ST4A
P5
E
P6
A
P3
C
B
A
P4
C
B
A
P8
C
B
A
P7
G
F
E
D
C
B
A
P5
B
P6
B
P6
F
P6
E
P6
D
P6
C
7.5AMPS
P5
D
P5
F
7.5AMPS 7.5AMPS
P5
A
P5
C
10AMPS 10AMPS
sht 1 BAT2P
sht 1 BAT2N
P2
49
50
45
36
35
37
20
26
25
11
4
3
1
30
29
19
31
41
A
ECM_BULK_23
B
ECM_BULK_23
C
ECM_BULK_23
D
ECM_BULK_23
E
ECM_BULK_23
F
ECM_BULK_23
G
ECM_BULK_23
H
ECM_BULK_23
J
ECM_BULK_23
K
ECM_BULK_23
L
ECM_BULK_23
M
ECM_BULK_23
N
ECM_BULK_23
O
ECM_BULK_23
OEM 50 PIN
B CONNECTOR
ON ECM
SENSOR
THROTTLE
P14
1
P14
2
P14
3
P15
1A
P15
1B
P15
2A
P15
2B
14VDC
DIAG_LT1
14VDC
DIAG_LT2
sht 1 DLP
6
10AMPS
sht 4 BN
(TO BATT2-12V NEG)
sht 4 BN
sht 4 BPL2
(TO BATT2-12V POS)
sht4BPL2
120 TERMINATING RESISTOR 120 TERMINATING RESISTOR
4 1
95 2
3 96
OEM 50 PIN
A CONNECTOR
ON ECM
OEM_50A
44
12
2
29
28
20
38
40
39
5
OEM_23M
A
B
C
D
M
S
E
F
H
P
W
OEM_3M
1
2
3
OEM_50B
41
31
19
29
30
1
3
4
11
25
26
20
37
35
36
45
50
49
ENG_GND_c0
MU7520H