Isuzu N-Series. Manual — part 993
CAB AND CHASSIS ELECTRICAL 8-77
Circuit Diagram
NHR55, NKR55
B
ST
ACC
ON
1
B-67
B-67
H-7
B-7
P-1
P-2
P-5
2
3
FRAME
FL-1 100A
MAIN
2L
FL-2 50A
KEY SW
STARTER SW
3B/Y
HEADLIGHT
BRACKET (LH)
3W/B
J-9
FRAME-LH
(CENTER )
3B
3W/L
1
X-8
X-8
X-8
X-8
2
RELAY;
EXHAUST BRAKE
2
H-6
5
4
3W
3W/B
5W
OFF
X-11
X-11
X-11
2
3
X-11
22
H-5
J-50
B-69
B-69
J-50
H-8
X-25
5
X-25
X-25
3
2
X-25
4
B-89
H-8
B-89
B-75
B-75
H-5
J-31
J-31
1
2
EXHAUST BRAKE
MAGNETIC VALVE
J-40
J-40
1
2
F-2
F-21
0.5B
0.5B
2B
2B
VSV; INTAKE THROTTLE
0.5LG
0.5LG
32
1
2
2
1
0.5LG/B
0.5LG/R
CLUTCH SW
ACCEL.SW
0.5B
12
0.5LG/B
RELAY;
EXHAUST BRAKE
CONTROL
17
0.5LG/R
0.5LG/R
0.5G/B
2
1
5
2
NEUTRAL SW
EXHAUST BRAKE SW
(COMBINATION SW)
0.5LG
F-16
15A
15A
10A
FUEL HEATER
EXH. BRAKE
GENERATOR
(N*R55)
0.5B/Y
0.5B/Y
METER
3B/Y
0.85W
GENERATOR (L)
0.85W/L
RELAY ; CHARGE
4
5
3B/R
0.5B
0.5W/R
0.85W/R
N8A0086E
8-78 CAB AND CHASSIS ELECTRICAL
NKR66, NPR66, NQR66
B
ST
ACC
ON
1
B-67
B-67
H-7
B-7
P-1
P-2
P-3
P-4
P-5
2
3
FRAME
FL-1 100A
MAIN
2L
FL-2 40A
KEY SW
STARTER SW
3B/Y
HEADLIGHT
BRACKET (LH)
3W/B
J-9
FRAME-LH
(CENTER )
3B
3W/L
1
X-8
X-8
X-8
X-8
2
RELAY;
EXHAUST BRAKE
2
H-6
5
4
3W
5W
OFF
X-1
X-1
X-1
2
3
X-1
22
H-5
B-69
B-69
H-8
X-25
5
X-25
X-25
3
2
X-25
4
B-89
H-8
B-89
B-75
B-75
H-5
J-31
J-31
1
2
EXHAUST BRAKE
MAGNETIC VALVE
J-40
J-40
1
2
F-13
0.5B
0.5B
2B
2B
VSV; INTAKE THROTTLE
0.5LG
0.5LG
32
1
2
2
1
0.5LG/B
0.5LG/R
CLUTCH SW
ACCEL.SW
0.5B
12
0.5LG/B
RELAY;
EXHAUST BRAKE
CONTROL
17
0.5LG/R
0.5LG/R
0.5G/B
2
5
EXHAUST BRAKE SW
(COMBINATION SW)
0.5LG
F-16
10A
10A
FUEL HEATER
EXH. BRAKE
0.5B/Y
0.5B/Y
METER
0.85W
GENERATOR (L)
0.85W/L
RELAY ; CHARGE
4
5
3B/R
0.5B
0.5W/R
0.85W/R
E-11
E-11
H-14
H-14
1
2
NEUTRAL SW
5
10
N8A0381E
CAB AND CHASSIS ELECTRICAL 8-79
Connector List
No.
Connector Face
X-1
X-8
X-11
X-25
B-69
B-69
B-75
B-75
005-006
005-006
005-001
1
3
2
4
5
005-006
008-001
1
5
2
6
3
7
4
8
008-002
1
5
2
3
6
7
4
8
002-022
1 2
002-023
2 1
B-89
B-89
E-11
E-11
J-50
J-50
H-14
H-14
No.
Connector Face
002-009
1
2
002-010
1
2
002-001
1
2
002-002
1
2
002-001
1
2
002-002
1
2
016-003
1
2
3
4
5
6
7
8
9
11 12 13 14
15
16
10
016-004
4
3
2
1
9
8
7
6
5
13 12 11 10
16
15
14
8-80 CAB AND CHASSIS ELECTRICAL
H-5
J-31
J-31
J-40
P-1
(12 V)
P-1
(12 V)
P-2
P-2
P-2
(24 V)
No.
Connector Face
002-011
1
2
002-012
1
2
002-014
1
2
000-003
000-004
000-003
000-004
000-006
P-3
P-1
(24 V)
P-4
P-5
(12 V)
P-5
(24 V)
No.
Connector Face
000-006
000-004
000-004
000-007
000-002
1
2
3
7
8
9
13
14 15
19
20 21
25
26 27
31
32 33
34
35
36
37
4
5
6
10
11 12
16
17 18
22
23 24
28
29 30
38
39 40
6
5
4
12
11 10
18
17 16
24
23 22
30
29 28
40
39 38
3
2
1
9
8
7
15
14 13
21
20 19
27
26 25
33
32 31
34
35
36
37
N8A5488E
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