Isuzu N-Series. Manual — part 1089
8-68 CAB AND CHASSIS ELECTRICAL
Circuit Diagram
NHR55, NKR55
1
E-8
1
B-51
B-51
X-20
X-20
X-20
X-20
B-10
H-5
B-10
7
B
ST
ACC
ON
1
B-67
B-67
H-7
B-10
B-10
B-10
P-1
P-2
P-5
B-67
2
3
4
2
4
5
E-3
5
B-10
13
6
8
6
37
4
FRAME
FL-1 100A
MAIN
FL-2 50A
KEY SW
FL-3 60A
GLOW
5B/L
3W/L
STARTER SW
3B/Y
3B/Y
F-16 10A
METER
F-22 10A
STARTER
RELAY; GLOW
GLOW
PLUG
HEADLIGHT BRACKET (LH)
3B
0.5B/Y
0.5B/Y
0.5B/Y
0.5B/W
RELAY; STARTER (4)
GLOW INDICATOR LIGHT (METER)
0.3B
0.5GR
3W/B
0.3B/R
5B/L
22
FUEL CUT
F-9 10A
0.5B/Y
0.5B/Y
0.5B/Y
0.3O/L
THERMO SW(GLOW)
FUEL CUT SOLENOID
14
12
H-14
H-5
1
E-15
CSD SOLENOID
1
E-24
X-26
4
X-26
5
X-26
32
1.25L
1.25B/O
15
H-14
5
H-14
0.3B/W
0.5B/O
0.5B/O
B-7
0.5B/Y
0.3B/R
H-5
RELAY; CSD
1.25Y
0.5Y
0.5L
H-8
3
X-26
QOS II CONTROL UNIT
2L
FUSE BLOCK
3
N8A5074E
CAB AND CHASSIS ELECTRICAL 8-69
NKR66, NPR66, NQR66
H-14
H-5
1
B-51
B-51
X-20
X-20
X-20
X-20
B-10
E-8
H-14
H-5
B-10
7
B
ST
ACC
ON
1
B-67
B-67
H-7
B-10
H-8
B-10
B-10
B-7
P-1
P-2
P-3
P-4
P-5
B-67
2
3
4
22
2
4
5
16
3
E-3
5
B-10
13
6
8
6
8
37
1
4
FRAME
FL-1
MAIN
FL-2 40A
KEY SW
FL-3 60A
GLOW
3B/L
3W/L
STARTER SWITCH
3B/Y
3B/Y
F-16 10A
METER
F-22 10A
STARTER
RELAY; GLOW
GLOW PLUG
HEADLIGHT BRACKET (LH)
3B
3B/Y
0.3B/R
0.3B/R
0.5B/Y
0.5B/Y
0.5B/Y
0.5B/Y
0.3O/L
0.3B/Y
0.5Y
0.5B/W
0.3B/W
RELAY; STARTER (4)
THERMO SWITCH (GLOW)
GLOW INDICATOR LIGHT (METER)
QOS II CONTROL UNIT
0.3B
0.5Y
3B/Y
0.5Y
2L
FUSE BLOCK
100A
or
120A
3
N8A5075E
8-70 CAB AND CHASSIS ELECTRICAL
Connector List
No.
Connector Face
B-10
B-51
B-67
B-67
E-3
E-8
E-8
E-24
007-001
6
4
1
7
3
5
2
014-001
1 2 3 4 5 6 7 8
9 1011121314
004-001
1
2
3
4
004-002
2
4
1
3
000-009
000-010
000-011
001-002
1
E-24
H-14
H-14
H-14
(4HF1)
H-14
(4HF1)
X-20
X-26
P-1
No.
Connector Face
001-003
1
016-001
1
2
3
4
5
6
7
8
9
10 11 12
13 14 15 16
016-002
4
3
2
1
8
7
6
5
12 11 10
9
16 15 14 13
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
005-003
1
2
3
5
4
005-006
000-004
CAB AND CHASSIS ELECTRICAL 8-71
H-5
H-7, H-8
Starter Switch
Refer to “START AND CHARGING” in this section.
Glow Indicator Light Thermo Switch
Refer to “METER AND WARNING/INDICATOR LIGHT”
in this section.
QOSII Control Unit
P-4
P-2
P-3
P-5
(12 V)
P-5
(24 V)
No.
Connector Face
000-004
000-006
000-006
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
Terminal No.
Connected to
1
Starter switch (ON)
2
—
3
Thermo switch
4
Starter switch (ST)
5
Glow relay
6
Ground
7
Glow indicator (Meter)
1
2
1
2
1 2 3 4
5 6 7 8
9 10 11 12 13
14 15 16 17 18
2
1
2
1
4 3 2 1
8 7 6 5
13 12 11 10 9
18 17 16 15 14
H - 6
H - 7
H - 8
N8A5489E
N8A0079E
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