JLG G12-55A Service Manual - Manual (Page 167)

9-25 G10-55A, G12-55A
Electrical System
9.6.4 Start & Charge Circuit - Cummins
21
20
19
18
17
16
7
11
15
14
13
12
9
10
8
3
5
6
4
1
2
POWER UNIT POWER UNIT
ST RLY
22
28
27
26
25
24
23
29
ALT EXC
ST
RL
Y
TRAN/BRK
PWR
TRAN/BRK
PWR
3
ON
6
PARK BRAKE PARK BRAKE
2
1
OFF
5
4
7
I
KEY/IGN
B
S
A
KEY
BA
T
PWR
KEY
IGN
KEY
ST
AR
T
TRAN/BRK PWR TRAN/BRK PWR
REVERSE
SHIFT
PWR
1
SHIFT
PWR
1
KEY
ST
AR
T
TRANSMISSION SHIFTER ZF TRANSMISSION SHIFTER ZF
1 2 6 4 3 5 7 8
HOBBS
KEY
ST
AR
T
TRAN/BRK
PWR
TRAN/BRK
PWR
REVERSE
87 87a 30 85 86 86 30 87a 87 85
3 4 5 2 1 1 3 4 2 5
F
R
SW1
F
R
SW2
N N
1
2
3
4
SW3
1
2
3
4
SW4
REVERSE
RELAY WARN LIGHT WARN LIGHT
TEST RELAY
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 26 11 1 3 2 5 4 7 6 9 8 10 19 15 13 12 14 17 16 18 20 22 21 24 23 25 30 28 27 29 31
CHASSIS HARNESS CHASSIS HARNESS KEY
BA
T
PWR
KEY
IGN
GAGE
PWR
GAGE
PWR
TRAN/BRK
PWR
TRAN/BRK
PWR
KEY
ST
AR
T
ST
RL
Y
KEY
ST
AR
T
TRAN/BRK
PWR
TRAN/BRK
PWR
KEY
IGN
GAGE
PWR
GAGE
PWR
KEY
BA
T
PWR
TRAN/BRK PWR TRAN/BRK PWR
ALT EXC
BA
T
POS
BA
T
POS
F
GRAY-5
20 20 20
BLACK-1
H G E F D
25 10
C B 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
G 20
GRAY-2
E D C A B
10 10 15 H
CB2 F10 F1
1
F12 BLUE-3 F
E
D
C
B
A
H
F6 10
15 F1
15
F2
F5
5
GREEN-4GREEN-4
G
F
E
D
C
B
A
C POWER DIST POWER DIST
VEC
87
30
86
85
RL196-87
1
RL196-30 RL196-30
1
RL196
1
2
ST RLY PWR RED 10AWG ST RLY PWR RED 10AWG
STRT SOL ORG 10AWG STRT SOL ORG 10AWG
ST RLY ORG 16AWG ST RLY ORG 16AWG
STARTER
ENGINE ENGINE
M
PWR STUD PWR STUD
1
SOL STUD
1
GND STUD GND STUD
1
STRT PWR RED 2/0AWG STRT PWR RED 2/0AWG
STRT SOL ORG 10AWG STRT SOL ORG 10AWG
POSITIVE CABLE POSITIVE CABLE
TO STARTER
TO STARTER
AND ALTERNATOR
MAIN DASH PANEL MAIN DASH PANEL
STONERIDGE STONERIDGE
GAUGE
6 5 4
1 3 2
TRANS TMP WRN
ENG STOP ENG STOP
(RED, 18 GA GXL) (RED, 18 GA GXL)
(RED, 18 GA GXL) (RED, 18 GA GXL)
WAIT TO START WAIT TO START
ENG WARN ENG WARN
(RED, 18 GA GXL) (RED, 18 GA GXL)
(RED, 18 GA GXL) (RED, 18 GA GXL)
+ -
DASH PANEL DASH PANEL
POSITIVE CABLE POSITIVE CABLE
TO STARTER
TO STARTER
AND ALTERNATOR
12 VDC 12 VDC
BATTERY
BATTERY
REVERSE
ALARM
B
C
A
REVERSE
D
A
B
T AIL
LIGHT
BU
ST
OP
TA
IL
GRN
RED
BLK
(-)
(OPT)
K1
1
K2
A
B
C
D
FUSIBLE LINK FUSIBLE LINK
ALT EXC RED 18AWG ALT EXC RED 18AWG
ALTERNATOR
K3
1
BATT POSITIVE
SIGNALS
BATT GROUND
ALT PWR - 12AWG ALT PWR - 12AWG
TRANS
TEMP
SW
TRANS
TEMP
SW
SHIFT
PWR
1
SHIFT
PWR
1
ENGINE
W
ARN
L T
ENGINE
W
ARN
LT
W
AIT
T
O
ST
AR
T
W
AIT
T
O
ST
AR
T
SHIFT
PWR
1
SHIFT
PWR
1
REVERSE
TRANS
TEMP
SW
TRANS
TEMP
SW
GAGE
PWR
GAGE
PWR
TRANS
TMP
SW
ENG
ST
OP
L T
ENG
ST
OP
L T
1
8
5
3
2
4
6
7
(D BLU, 18 GA GXL) (D BLU, 18 GA GXL)
(RED,
18
GA
GXL)
(RED,
18
GA
GXL)
(ORG, 18 GA GXL) (ORG, 18 GA GXL)
(ORG, 18 GA GXL) (ORG, 18 GA GXL)
ENG
W
ARN
L T
ENG
W
ARN
LT
W
AIT
T
O
ST
AR
T
L T
W
AIT
T
O
ST
AR
T
L T
(WHT, 18 GA GXL) (WHT, 18 GA GXL)
ENG WARN LT VIO 18AWG ENG WARN LT VIO 18AWG
ENG STOP LT ORG 18AWG ENG STOP LT ORG 18AWG
WAIT TO START WHT 18AWG WAIT TO START WHT 18AWG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
CONNECTS
T
O
60
PIN
RECEPTICLE
ON
ENGINE
ECM
CONNECTS
T
O
60
PIN
RECEPTICLE
ON
ENGINE
ECM
ENG WARN LT VIO 18AWG ENG WARN LT VIO 18AWG
ENG STOP LT ENG STOP LT
WAIT TO START WAIT TO START
TRANS
TEMP
SW
MY5050