Electrical schematic - sheet 2 of 17 -74, Sheet 2 – JLG 1850SJ Service Manual User Manual
Page 434
SECTION 7 - BASIC ELECTRICAL INFORMATION & ELECTRICAL SCHEMATICS
7-74
– JLG Lift –
3121619
4
3
2
1
G
H
E
F
C
D
A
B
1
2
3
4
R
R
R
R
G
Y
R
Y
G
G
G
G
Y
Y
Y
G
Y
G
G
G
PLTF LEVEL
BCS
AXLE SET
GENERATOR
OVERLOAD
DRIVE
1000# MODE
500# MODE
TILT
BROKEN
ENGINE
ENABLE
SYSTEM
CREEP
SPARE14
LOW FUEL
FUEL GAUGE
CABLE
FAULT
PREHEAT
ORIENTATION
FU
E
L
1
/4
FU
E
L
1
/2
FU
E
L
3
/4
FU
E
L
G
N
D
FU
E
L
F
U
L
L
SP
A
R
E
1
4
CR
E
E
P
EN
A
B
L
E
LO
W
F
U
E
L
N/
C
N/
C
GR
OU
N
D
BC
S
AX
L
E
S
E
T
D
R
IV
E O
R
IE
N
T
AT
I
O
N
1
000# M
O
D
E
BR
O
K
E
N
C
A
B
L
E
SY
ST
E
M
F
A
U
L
T
P
L
A
TF L
E
V
E
L
F
A
IL
U
R
E
GE
N
E
R
A
T
O
R
OV
E
R
L
O
A
D
5
00# M
O
D
E
TI
L
T
E
N
G
IN
E
PR
EH
E
A
T
DR
IV
E
5
K
%
%
185
ST
EE
R
RIGHT
L EFT
LI
F
T
SW
IN
G
5
K
%
%
185
5K
%
%
18
5
ANALYZER
BOTTOM OF CONSOLE BOX
15 POS MATE-N-LOCK
CONNECTOR IN CONSOLE BOX
SEE SHEET 3
ZONE B-1
SI
L
V
E
R
PI
N
GO
L
D
P
IN
WORK/FLOOD
LIGHT CONNECTION
PLATFORM CONTROL MODULE - 1600343
JIB SWING RIGHT
JIB SWING LEFT
DRIVE ORIENTATION
SOFT TOUCH
ENGIINE PREHEAT
LIGHT TILT LIGHT
500 LB MODE LIGHT
OVERLOAD LIGHT
GENERATOR ENABLE
LIGHT PLATFORM
LEVEL FAILURE
LIGHT SYSTEM
FAILURE LIGHT
BROKEN CABLE LIGHT
1000 LB MODE LIGHT
DRIVE ORIENTATION LIGHT
AXLE SET LIGHT
BOOM CONTROL SYSTEM LIGHT
GROUND
LOW FUEL LIGHT
LED PANEL POWER
CREEP MODE LIGHT
FUEL LEVEL FULL LIGHT
GROUND
FUEL LEVEL 3/4 LIGHT
FUEL LEVEL 1/2 LIGHT
FUEL LEVEL 1/4 LIGHT
ANALYZER GROUND
ANALYZER TX
ANALYZER RX
ANALYZER POWER
JIB LOCK LIGHT
IGNITION POWER
IGNITION POWER
IGNITION POWER
GR
O
U
N
D
AL
A
R
M
F
OOT
S
W
IT
C
H
OP
E
N
G
E
NE
RA
T
O
R
SO
F
T
T
O
U
C
H
GR
O
U
N
D
GR
O
U
N
D
J
IB
L
O
CK
P
IN
O
U
T
J
IB
L
O
CK
P
IN
IN
P
L
A
T
F
O
RM
RO
T
A
T
E
R
IG
H
T
P
L
A
T
F
O
RM
RO
T
A
T
E
L
E
F
T
GR
O
U
N
D
PL
A
T
F
O
R
M
L
E
VE
L
D
O
W
N
PL
A
T
F
O
R
M
L
E
VE
L
U
P
IG
N
IT
IO
N
IG
N
IT
IO
N
P
L
A
T
F
O
RM
M
O
DE
M
12 P
O
W
E
R
M
12 P
O
W
E
R
M
12 G
R
O
U
N
D
E
N
G
IN
E
SPE
ED
TW
O
S
P
E
E
D
IG
N
IT
IO
N
P
O
W
E
R
C
R
AB
ST
EE
R
C
O
O
RDI
NA
T
E
D S
T
E
E
R
PL
A
T
F
O
R
M
L
E
V
E
L
U
P
PL
A
T
F
O
R
M
L
E
V
E
L
D
O
W
N
AX
L
E
E
X
T
E
N
D
AX
L
E
R
E
T
R
A
C
T
HO
R
N
CR
E
E
P
R
E
F
E
RE
NCE
V
O
L
T
A
G
E
P
L
A
T
FO
R
M
R
O
TA
TE
R
IG
H
T
PU
M
P
P
O
T
P
L
A
T
FO
R
M
R
O
TA
TE
L
E
FT
G
R
O
UND
S
O
FT
TO
U
C
H
JI
B
U
P
JI
B
D
O
W
N
H
EAD
& T
A
IL
L
IG
H
T
J
IB T
E
L
E
SC
O
P
E
I
N
J
IB T
E
L
E
SC
O
P
E
O
U
T
2
3
4
7
8
9
10
11
12
13
16
17
18
23
24
27
28
29
30
31
32
34
35
C
O
01-
J
7
1
2
3
4
5
6
7
8
9
14
15
16
17
18
19
20
21
22
25
26
29
33
34
C
O
01-
J
6
1
2
3
4
5
6
7
8
CO01-J2
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
C
O
01-
J
5
1
2
3
4
5
6
7
8
PLATFORM DISPLAY
FAILURE
LED BOARD
GD
0
4
-J
1
1
2
3
4
5
6
GD
0
4
-J
2
1
2
3
4
5
6
GD
0
4
-J
3
1
2
3
4
5
6
GD
0
4
-J
4
1
2
3
4
5
6
PUSH BUTTON
HORN
SW
0
8
-1
1
SW
0
8
-2
1
PUMP POT
S
W
10
1
2
3
4
5
6
PLATF ROTATE
TOGGLE SWITCH
SW
1
3
1
3
2
4
5
6
1
3
2
HIGH DRIVE
TOGGLE SWITCH
SW
1
5
1
3
2
4
5
6
STEER MODE
TOGGLE SWITCH
SW
1
6
1
3
2
4
5
6
PLATF LVL OVERRIDE
TOGGLE SWITCH
SW
1
7
1
3
2
4
5
6
AXLE EXTEND/RETRACT
TOGGLE SWITCH
SW
1
8
1
3
2
4
5
6
D
R
IVE
&
ST
E
E
R
*
EL
E
C
T
R
O
N
IC
JOY
S
T
IC
K
L
IF
T
&
S
W
IN
G
*
E
L
EC
T
R
O
N
IC
J
O
YS
T
I
C
K
GRN
GR
N
BLK
BL
K
BRN
BR
N
RED
RE
D
BLU/YEL
BL
U
/Y
E
L
ORN/YEL
OR
N
/Y
E
L
BLU
BL
U
WHT
WH
T
BLU
BL
U
BLK
BL
K
BRN
BR
N
RED
RE
D
WHT/GRN
WH
T
/G
R
N
WHT/RED
WH
T
/R
E
D
WHT/YEL
WH
T
/Y
E
L
*
P
IE
Z
O
AL
AR
M
AH30+
1
AH30-
1
W
H
T
4
8
-
1
EN
G
P
R
EH
E
A
T
WHT 48-1 ENG PREHEAT
W
H
T 4
9
-
1
TI
L
T
WHT 49-1 TILT
W
H
T
54-
1
50
0LB
M
O
D
E
WHT 54-1 500LB MODE
W
H
T
49-
2 O
V
E
R
LO
A
D
WHT 49-2 OVERLOAD
WH
T
5
2
-1
G
E
N
WHT 52-1 GEN
WH
T
4
7
-1
P
L
T
F
M
LVL
F
A
IL
WHT 47-1 PLTFM LVL FAIL
W
H
T
4
7
-2
SY
S
F
A
IL
WHT 47-2 SYS FAIL
WH
T
4
9
-3
B
R
K
N
C
A
B
L
E
WHT 49-3 BRKN CABLE
W
H
T
5
4
-2
1000LB
M
O
D
E
WHT 54-2 1000LB MODE
W
H
T
5
5
-1
DR
V
O
R
NT
WHT 55-1 DRV ORNT
W
H
T
39
-
1
A
X
L S
E
T
WHT 39-1 AXL SET
WH
T
4
9
-4
B
C
S
WHT 49-4 BCS
BL
K 0
-2
BLK 0-2
W
H
T
47-
5 LO
W
F
U
L
WHT 47-5 LOW FUL
Y
E
L
2
-2
EN
ABL
E
YEL 2-2 ENABLE
W
H
T
49-
5
C
R
E
E
P
WHT 49-5 CREEP
W
H
T 4
7
-4
FU
L
FU
L
L
WHT 47-4 FUL FULL
BL
K 0
-1
BLK 0-1
W
H
T
47-
3
F
U
L 3/
4
WHT 47-3 FUL 3/4
WHT 47-2 FUL 1/2
W
H
T
47-
2
F
U
L 1/
2
W
H
T
47-
1
F
U
L 1/
4
WHT 47-1 FUL 1/4
X32
1
2
3
4
WHT 49-6 ANALGND
WHT 49-7 TX
WHT 49-8 RX
WHT 49-9 ANALPWR
Y
E
L 2
-
1-
1
Y
E
L 2
-
1-
1
Y
E
L 2
-
1-
2
Y
E
L 2
-
1-
2
Y
E
L 2
-
1-
3
Y
E
L 2
-
1-
3
Y
E
L 2
-
1-
4
Y
E
L 2
-
1-
4
Y
E
L 2
-
1-
5
Y
E
L
2-
1-
5
Y
E
L
2-
1-
8
Y
E
L
2-
1-
8
B
L
K
0-
1-
2
[5
,G
]
WH
T
4
8
-1
E
N
G
S
P
D
W
H
T
48-
1 E
N
G
S
P
D
WH
T
4
8
-2
2
S
P
D
WH
T
4
8
-
2
2
S
P
D
YE
L
2
-1
YEL
2
-1
WH
T
5
5
-2
C
R
B
S
T
R
WH
T
5
5
-2
C
R
B
S
T
R
W
H
T
55-
3 C
R
D
S
T
R
W
H
T
5
5
-3
CRD
S
T
R
WH
T
2
5
-
1
P
L
V
L
U
P
W
H
T
25-
1
P
L
V
L
U
P
WH
T
2
5
-2
P
L
V
L
D
N
WH
T
2
5
-
2
P
L
V
L
D
N
WH
T
3
9
-2
A
X
L
E
X
T
W
H
T
3
9
-
2
AX
L
EX
T
WH
T
3
9
-3
A
X
L
R
E
T
WH
T
3
9
-3
AX
L
R
E
T
W
H
T
5
2
-2
HO
RN
WH
T
5
2
-
2
H
O
R
N
W
H
T
23-
1 P
R
O
T
R
T
W
H
T 2
3
-1
P
R
O
T R
T
W
H
T
23-
2
P
R
O
T
L
T
WH
T
2
3
-2
P
R
O
T
L
T
W
H
T
2
9
-1
J
T
EL
E I
N
W
H
T
2
9
-1
J
T
E
L
E
IN
W
H
T
2
9
-
2
J
T
EL
E
O
U
T
W
H
T
2
9
-2
J
T
EL
E
O
U
T
WHT 49-21 SFTCH LT
[5,G]
WHT 55-6 DOS
WHT 55-6 DOS
[8,G]
WHT 59-1 JSWG RT
[5,G]
WHT 59-2 JSWG LT
[5,G]
W
H
T
4
9
-1
4
C
R
EEP
W
H
T
49
-
14
C
R
E
E
P
W
H
T 5
5
-4
P
O
T R
E
F
WH
T
5
5
-4
P
O
T
R
E
F
WH
T
5
5
-5
P
U
M
P
P
O
T
W
H
T
55-
5 P
U
M
P
P
O
T
BL
K
0
-3
BL
K 0
-3
W
H
T
49-
15
S
F
T
T
O
U
C
H
WH
T
2
7
-1
JIB
U
P
WH
T
2
7
-2
J
IB
D
N
W
H
T
5
2
-3
H
E
A
D
/T
A
IL LT
W
H
T
13-
1
M
T
E
L
E
I
N
X
38A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
X3
8
B
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
YEL 2-7
Y
E
L 2
-
7
YEL 2-8
Y
E
L 2
-
8
YEL 2-6
[6,A]
WHT 49-26 ALARM
W
H
T
49
-
26
A
L
A
R
M
BL
K 0
-5
BLK 0-5
Y
E
L 2
-8-
1
Y
E
L 2
-8-
1
W
H
T
49-
27
W
H
T
49-
27
W
H
T
49-
25
F
T
S
W
O
P
E
N
W
H
T
49
-
25 F
T
S
W
O
P
E
N
W
H
T
52-
4
G
E
N
W
H
T
52-
4 G
E
N
W
H
T
49-
24
S
F
T
C
H
W
H
T
49
-
24
S
F
T
C
H
W
H
T
4
9
-23
G
N
D
BL
K 0
-4
WH
T
2
3
-4
P
R
O
T
R
T
W
H
T
23
-3
P
R
O
T
LT
W
H
T
4
9
-22
G
N
D
W
H
T
4
9
-10
X
43 G
N
D
W
H
T
4
9
-12
X
44 G
N
D
B
R
N
49-
11 X
4
3
P
W
R
B
R
N
49-
1
3
X
4
4 P
W
R
WH
T
2
5
-4
P
L
V
L
D
N
WH
T
2
5
-
3
P
L
V
L
U
P
Y
E
L 2
-5
Y
E
L 2
-4
R
E
D
1-
4-
3 P
LTF
M
O
D
E
[7
,E
]
Y
E
L 2-
1-
7
Y
E
L 2-
1-
7
LIGHT
JIB LOCK PIN
LB
320+
1
LB
3
20-
1
B
L
K
0-
1
-2-
2
WHT 59-6 JIB LOK
[4,G]
W
H
T
59
-6
J
IB
LO
K
[2
,D
]
W
H
T
55-
26
J
L
O
C
K
I
N
W
H
T
5
5
-2
5
J
L
OC
K
OU
T
X392
1
2
3
4
BLK 0-41-3 (16)
BLK 0-40-3 (16)
ORG 1-7-1 WK LT PWR(16)
ORG 1-7-2 WK LT PWR(16)
Figure 7-78. Electrical Schematic - Sheet 2 of 17
SHEET 2