JLG G12-55A Service Manual - Manual (Page 160)

Electrical System
9-18 G10-55A, G12-55A
9.5.9 Chassis Schematic - Cummins
S/N 0160039451 and After Including 0160039394 & 0160039397
A/C COMPRESSOR M
(OPT)
TO
CAB
ASSEMBL
Y
HORN
REVERSE ALARM
B
A
AB
BC
A
D
C
B
A
2 2 1 1
B
A
21 20 19 18 17 16 7 11 15 14 13 12 9 10 8 3 5 6 4 1 2
TOPOWER UNITASSEMBL Y
+
-
OPTPWR 1
KEYIGN
GAGEPWR
ECUIGN/012
ECUBA T/022
OPTPWR 2
STEER/SWA YPWR
STAB/TIL TPWR
KEYBA TPWR
HORNPWR
OPTPWR 3
OPTPWR 4
SP
ACCY
PWR
SPBA TPWR
ECUGND/050
KEY
ACC
TRAN/BRK
PWR
AUX
RL
YS
PWR
SHIFTERGND
DASH
GND
AL
T EXC
OPT
GND
1
OPT
GND
2
SP
CAB
GND
1
SP
GND
1
SP
GND
2
AUX
ELEC
GND
L T GND
STR/SW
A Y GND
FUL/ST
AB
GND
ENGGND
12
11
1 3
15
14
16
20
17
18
19
21
22
23
25
24
26
28
27
29
KEYBA TPWR
KEYIGN
OPTPWR 2
OPTPWR 3
KEYACC
OPTPWR 4
GAGEPWR
STEER/SWA YPWR
HORNPWR
TRAN/BRKPWR
AUXRL YSPWR
KEYST ART
DASHGND
REVERSE
REVERSE
REVERSE
STRCRB
STR
CRB
STRA W
STR
A W
HORN
HORN
TRANSTMP SW
TRANSSOL Y1
TRANSSOL Y2
TRANSSOL Y3
TRANSSOL Y4
TRANSSOL Y5
PKBRK SOL
WORKLT
WORKLT
STOP
LT
STOP LT
FULL VL
ST
RL
Y
STRL Y
PK
BRK
SOL
WAIT TO STAR T
ENG
W
ARN
LT
ENGW ARNLT
ENG
ST
OP
L T
ENGST OPL T
THRSUP/91 1
THR
SUP/91
1
THR
SGN/915
THRSGN/915
THR
R TN/914
THRR TN/914
SP-1
SP-2
SP-3
SP-3
SP-2
SP-1
ECU
BA
T/022
ECU
IGN/012
ECU
GND/050
ENG
GND
FULL VL
91
0
12
6
4
3
57
9
81
0
1 2
11
14
13
15
19
17
16
18
22 28 27 26 25 24 23 29
IVS
W AIT
T O
ST
AR
T L T
ON-IDLE IVR YEL
(CAN
H)
BRN/BLK
(CAN
SHIELD)
TRANS
TMP
SW
TRANS
SOL
Y1
TRANS
SOL
Y2
TRANS
SOL
Y3
TRANS
SOL
Y4
TRANS
SOL
Y5
KEYACC
OPTPWR 1
B
A
FRONT
RIGHT
WORKLIGHT
WORKLT
PLUGGED
PLUGGED
QCPWR
QCPWR
QCGND
QCGND
OPTGND 1
OPTGND 2
AB JOYSTICK VA
LV E
TIL
T -ON
B
A
AB
D
C
QCPWR 1
QCPWR 2
QCGND 5
QCGND 7
ACCLUTCH
PLUGGED
PLUGGED
PKBRK SOL
SHIFTPWR 1
SHIFTERGND
30
31
KEYST ART
SHIFTPWR 1
TRAN/BRKPWR
SPBA TPWR
SPACCY PWR
SPCAB GND1
SPACCY PWR
SPBA TPWR
TILT DN
TILT UP
SPGND 1
SPGND 2
NEGA
TIVE
CABLE
TO
CAB
FIREW
ALL
D LT GND
LT GND
STAB/TIL TPWR
STAB/TIL TPWR
FUL/STAB GND
STAB VLV
STAB VLV
STAB VLV
E
AUXELEC GND
7
13
2
5
4
68
PLUGGED
PLUGGED
PLUGGED
PLUGGED
PLUGGED
YEL(CAN H)
GRN(CAN L)
BRN/BLK(CAN SHIELD)
26
11
13
2
5
4
7
6
9
81
0
19
15
13
12
14
17
16
18
20
22
21
24
23
25
30
28
27
29
31
SP
CAB
GND
2
SPCAB GND2
IVR
ON-IDLE
IVS
SPBA TPWR
TILT DN
TRANSTMP SW
LT GND
STR/SW
A Y GND
STR/SW
A Y GND
FUL/STAB GND
FUL/STAB GND
FUL/STAB GND
FUL/STAB GND
FUL/STAB GND
ACCLUTCH
AB
BAT POS
BAT POS
BAT GND
BAT GND
PLUGGED
AL
T EXC
TILT UP
STAB/TIL TPWR
FUEL SNDR
BLK
RED
YEL
BLU
ORG
T AIL
LIGHT
BU
ST
OP
TA
IL
GRN
RED
BLK
(-)
F PLUGGED PLUGGED
(OPT)
(OPT)
QC
DIVER
T OR
VA
LV
E
F
GRA
Y -5
20
20
20 BLACK-1
HG
E
F
D
25
10
CB
A
H
G
10
25
15
CB3
CB4
F8
F3
IGNITION-1
86
30 87
87a
85
F4
F9
CB1
F7
ACCY
-1 87
87a 30
86 85
86
87a 30 87
85
ACCY
-2
87
87a 30
86 85
IGNITION-2
BLACK-6 A
C
A
G
20
GRA
Y -2
ED
C
A
B
10
10
15
H
CB2
F10
F11
F12
BLUE-3 F E D C B A H
F6
10 15
F1
15
F2 F5
5
GREEN-4 G F E D C B A
C
F4
10A
GAGE
(INST
P ANEL)
PWR
SP
ARE
ACCESSOR
Y
PWR
SP
ARE
BA
TTER
Y PWR
AUX
ELECTRIC
PWR
ENGINE
ECU
BA
T
PWR
KEY
BA
TTER
Y PWR
R.
AXLE
ST
AB/TIL
T PWR
F1
1
F12 F10 F9
15A 10A 10A 25A
F8 F7 F5 F6
25A 15A 15A 10A
STEER/SW
A Y
PWR
HORN
PWR
POWER
DISTRIBUTION
OPTIONS
POWER
4
OPTIONS
POWER
3
OPTIONS
POWER
2
OPTIONS
POWER
1
FUSE/BREAKER
LEGEND
ENGINE
ECU
IGN
PWR
AL
TERNA
T OR
EXCITE
TRANS/P
ARK
BRK
PWR
CB4
20A
F2 F3 F1
5A 10A 15A
CB2 CB3 CB1
20A 20A 20A
24
3
1
12
4
3
(+)15
DEG
RL Y
(-)15
DEG
RL Y
85
86
2
5
30
87
87a
1
4
3
85
86
2
5
30
87
87a
4
1
3
6A
6A
STEER/SWA YPWR
STEER/SWA YPWR
STEER/SWA YPWR
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
STR/SWA YGND
SWA YENABLE
SWA YENABLE
SWA YENABLE
MINUS15
PLUS15
PLUS15
MINUS15
PLUG
PLUG
SWA YR T
SWA YL T
SWA YL T
SWA YR T
SWA YLOCK
SWA YLOCK
12
12
12
12
12 SWA YLOCK
STR/SWA YGND
TRANSSOL Y6
GRN
(CAN
L)
STEER/SWA YPWR
AB
CD
BLU
WHT
BLK
RED
ORG
+
12
TURNS
PER
FOOT
TWIST
CHASSISHARNESS
HD34-24-29PE
TO
OPTIONS
HARNESS
HD34-24-19SE CHASSIS
HARNESS
TO
SHIFTER
HARNESS
HD36-24-31ST CHASSIS
HARNESS
TO
DASH
P ANEL
HARNESS
HD36-24-31PT CHASSIS
HARNESS
POSITIVE
CABLE
TO
ST
AR
TER
AND
AL
TERNA
T OR
NEGA
TIVE
CABLE
TO
ENG
BLOCK
NEGA
TIVE
CABLE
FLAG
T O
CHASSIS
FRAME
ST
ABILIZER
PROXIMITY
SWITCH
12
VDC
BA
TTER
Y
POWER
DIST
VEC
ST
ABILIZER
VA
LV
E
REMOVE
DIODES
FOR
OPTIONAL
ROLLER
TIL T
ON
JOYSTICK
AND
INST
ALL
"EMPTY"
PLUG
ALL
WHEEL
STEER MODE VA
LV E
CRAB
AB
D
C
EF
2 1
AUXILIAR
Y
ELECTRIC (OPT)
PLUGGED
PLUGGED
PLUGGED
PLUGGED
TRANS
SOL
Y6
PLUGGED PLUGGED
CABLE
CABLE
AB
D
C
MAST
SIDESHIFT
SWING
EXTRA E
AUXELEC GND
AUXILIAR
Y
ELECTRIC SL
T
R T
T M
A
BLK
RED
YEL
BLU
ORG
F PLUGGED PLUGGED
(OPT)
MY4590A