Isuzu N-Series. Manual - part 1092

8-80 CAB AND CHASSIS ELECTRICAL

Circuit Diagram

NHR55, NKR55, NHR69

X-25

X-25

X-25

X-25

J-50

J-50

H-5

J-31

J-31

H-8

B-75

B-75

H-5

B-69

X-11

X-11

X-11

X-11

X-11

B-67

H-6

X-8

X-8

X-8

X-8

B-67

OFF

ON

ACC

ST

B

J-9

B-7

P-1

P-2

2

2

3

22

2

1

2

1

2

1

32

4

5

2

3

12

1

2

2

5

1

4

5

2

1

3

4

5

2

FL-2  50A

KEY SW

FL-1  100A

MAIN

8W

STARTER SWITCH

3W/L

3B/Y

3B/Y

F-16  10A

METER

F-21  15A

GENERATOR

0.5B/Y

2B

HEADLIGHT BRACKET (LH)

FRAME-LH (CENTER)

3B

2B

0.85W/L

GENERATOR (L)

RELAY; EXHAUST

BRAKE

RELAY; CHARGE

NEUTRAL SWITCH

GENERATOR (IG)

0.85W

0.85W

3W

0.5LG

0.5LG/L

EXHAUST BRAKE SWITCH

(COMBINATION SWITCH)

0.5B/G

RELAY; EXHAUST

BRAKE CONTROL

CLUTCH SWITCH

ACCEL. SWITCH

0.5LG

EXHAUST BRAKE

MAGNETIC VALVE

2B

F-2  15A

FUEL HEATER

EXH BRAKE

3B/R

0.5LG/L

0.5LG/B

0.5LG/B

0.5B

0.5W/L

B-69

B-51

B-89

B-89

0.5LG

0.3B

0.5B

1.25B

2B

H-7

1

0.5LG/Y

P-5

FRAME

 (1)

EXHAUST BRAKE 
INDICATOR LIGHT (METER)

H-8

17

0.5LG/R

3W/B

0.5LG/R (69)

2L

N8A5086E

CAB AND CHASSIS ELECTRICAL 8-81

NKR66, NPR66, NQR66, NPR71

X-25

X-25

H-5

J-40

J-40

J-31

J-31

X-1

X-1

H-8

H-8

X-25

X-25

H-6

B-67

X-8

X-8

X-8

X-8

H-5

X-1

X-1

J-9

B-7

B-67

OFF

ON

ACC

ST

B

P-1

P-2

P-3

P-4

P-5

2

2

3

1

4

5

2

3

4

5

2

22

45

2

3

12

11

2

2

32

1

1

22

2

5

17

FL-1

MAIN

FL-2  40A

KEY SW

3W/L

5W

STARTER SWITCH

3B/Y

3W

RELAY; EXHAUST BRAKE

F-2

10A

FUEL HEATER

EXH BRAKE

0.5LG

0.5LG

GENERATOR (L)

0.85W/L

0.5W/R

3B/R

F-16  10A
METER

0.5B/Y

0.5B/Y

HEADLIGHT

BRACKET (LH)

FRAME-LH (CENTER)

3B

2B

0.5LG/L

0.5LG/L

EXHAUST BRAKE SWITCH

(COMBINATION SWITCH)

EXHAUST BRAKE INDICATOR
LIGHT (METER)  B-51  (1)

0.5LG/L

0.5LG/L

0.5LG/B

0.5LG

0.5LG

0.5LG

0.5B

0.5B

VSV INTAKE 

THROTTLE

ACCEL. SWITCH

CLUTCH SWITCH

RELAY; EXHAUST 

BRAKE CONTROL

EXHAUST BRAKE

MAGNETIC VALVE

0.5B/G

RELAY; CHARGE

0.85W

H-7

1

B-69

B-69

B-75

B-75

B-89

B-89

2B

2

E-11

1

E-11

10

H-14

5

H-14

0.5W/R

0.5B

0.5LG/B

0.5B

FRAME

0.5LG/R

NEUTRAL SWITCH

2L

100A

or

120A

N8A5087E

8-82 CAB AND CHASSIS ELECTRICAL

Connector List

No.

Connector Face

B-17

X-11

X-1

X-8

X-25

B-47

B-67

B-67

004-004

1

2

3

4

005-001

1

3

2

4

5

005-006

005-006

005-006

020-001

1

11

2

12

3

13

4

14

5

15

6

16

7

17

8

18

9

19

10

20

004-001

1

2

3

4

004-002

2
4

1
3

B-69

B-69

B-75

B-75

B-89

E-11

E-11

J-50

No.

Connector Face

008-001

1
5

2
6

3
7

4
8

008-002

1
5

2

3

6

7

4

8

002-009

1

2

002-010

1

2

002-009

1

2

002-001

1

2

002-002

1

2

002-001

1

2

CAB AND CHASSIS ELECTRICAL 8-83

J-50

J-70

J-70

H-14

H-14

X-21

J-31

J-31

No.

Connector Face

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

005-003

1

2

3

5

4

002-011

1

2

002-012

1

2

J-40

P-1

(12 V)

P-2

P-1

(24 V)

P-4

P-2

(24 V)

P-3

P-5

(24 V)

No.

Connector Face

002-014

1

2

000-003

000-004

000-004

000-004

000-006

000-006

000-002