JLG G12-55A Service Manual - Manual (Page 164)

Electrical System
9-22 G10-55A, G12-55A
9.6 CIRCUIT BREAKDOWNS
9.6.1 Constant Power Circuit from Battery - John Deere & Perkins
MY1102
F
GRAY-5
20 20 20
BLACK-1
H G E F D
25
C B A H G
10 15
CB3 CB4 F8
IGNITION-1
86 30 87 87a 85
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
GRAY-2
E D C A B
15 H
CB2 F12 BLUE-3
F
E
D
C
B
A
H
15 F1
F2 5
GREEN-4
G
F
E
D
C
B
A
C
+ -
12 11 13 15 14 16 20 17 18 19 21 22 23 25 24 26 28 27 29 9 10 30 31 7 1 3 2 5 4 6 8 12 11 13 15 14 16 20 17 18 19 21 22 23 25 24 26 28 27 29 9 10 30 31 7 1 3 2 5 4 6 8
I
B
S
A
G B+
M
85
86
87
30
D+ A
87 87a 30 86 85
1 5 3 2 4
3
ON
6
2
1
OFF
5
4
7
2
3
ON
OFF 85 87 86 87a 30 85 87 86 87a 30
BLACK-1
G H F D E C
87 87a 30 85 86
OPTION (15A)
GRAY-2
A B
87 87a 30 85 86
OPTION (25A)
HEATER/BLOWER
LIGHTS
87 87a 30 85 86
WIPER
BCN/FAN
87 87a 30 85 86
G
H
BLUE-3 F
E
D
C
B
A
H
GREEN-4
G
F
E
D
C
B
A
7
29
28
26
27
24
25
15
23
22
20
21
18
19
16
17
11
13
14
12
9
10
8
3
5
6
4
1
2
1 2 6 4 3 5 7 9 8 10 12 11 14 13 15 19 17 16 18
BAT POS
BAT POS
POWER DIST
VEC
NEGATIVE CABLE
TO CAB FIREWALL
POSITIVE CABLE
TO STARTER
AND ALTERNATOR
NEGATIVE CABLE
TO ENG BLOCK
NEGATIVE CABLE
FLAG TO
12 VDC
BATTERY
KEY
BA
T PWR
KEY
ACC
HORN PWR ST
RL
Y
OPT
PWR 1
KEY
ACC
OPT
PWR 4
OPT
PWR 3
OPT
PWR 2
TRAN/BRK
PWR
TRAN/BRK PWR SP
BA
T PWR
SP
BA
T PWR SP
BA
T PWR
ECU BA
T/022
ECU BAT/022
SP BAT PWR
ALT EXC
KEY ACC
TRAN/BRK PWR
TO OPTIONS HARNESS
ST RLY
OPT
PWR 1
KEY
ACC
OPT
PWR 4
OPT
PWR 3
OPT
PWR 2
KEY
ACC OPT
PWR 1
OPT
PWR 4
OPT
PWR 3
OPT
PWR 2
KEY
BA
T PWR
KEY
ACC
HORN PWR
ST
R
LY
TRAN/BRK
PWR
LEFT DASH PANEL
ST
RL
Y
TRAN/BRK
PWR
HORN PWR
(4 AWG, RED)
ALTERNATOR
STARTER
ALT EXC A
ST RLY
ST RLY PWR
ST RLY PWR
STRT SOL
STRT SOL
(3/0 AWG, RED)
(3/0 AWG, BLACK)
(3/0 AWG, RED)
(3/0 AWG, BLACK)
(4 AWG, RED)
(3/0 AWG, RED)
6A/400V
NEGATIVE CABLE
TO BATTERY
POSITIVE CABLE
TO BATTERY
STARTER
RELAY
TO ENGINE ECU
TRAN/BRK PWR
SP
BA
T PWR
SP
BA
T PWR
SP
BA
T PWR
OPTIONS HARNESS
TO DASH PANEL HARNESS
DASH PANEL HARNESS
TO SHIFTER HARNESS
SHIFTER HARNESS
REVERSE RELAY
KEY/IGN
HORN
PARK BRAKE
OPTIONS VEC
6A/400V