Isuzu N-Series. Manual - part 1126

8-216 CAB AND CHASSIS ELECTRICAL

Backup Light Bulb

Removal
Preparation:
Disconnect the battery ground cable.

1. Lens
2. Bulb

Installation
To install, follow the removal steps in the reverse order.

Backup Light Switch

Inspection

1. With the switch installed to the transmission, check

the continuity between the terminals of the switch
connectors.
When the continuity is found between the terminals
only with the switch shifted to the reverse position,
the switch is normal.

2. When the result of the above inspection is found

abnormal, remove the switch from the transmis-
sion and conduct a test on the switch alone.
If the continuity appears between the connector
terminals when the ball of the switch is pushed, the
switch is normal. (When the ball is released, the
continuity disappears.)

3. If there is no continuity with the switch installed to

the transmission, even though the switch is found
to be normal, then adjust the stroke of the switch by
changing the thickness of the switch gasket.

Removal
Preparation:
Disconnect the battery ground cable.

1. Backup Light Switch

1) Disconnect the connectors.
2) Remove the switch by turning it counterclock-

wise.

Installation

1. Backup Light Switch

Apply liquid gasket to the screw portion of the
switch to prevent oil leak.

Backup Buzzer

Inspection
Apply battery voltage to the backup buzzer connector to
check the buzzer sound.
Repair or replace the buzzer when the result of inspec-
tion is found abnormal.

N8A0195E

N8A0196E

N8A0197E

CAB AND CHASSIS ELECTRICAL 8-217

Removal
Preparation:
Disconnect the battery ground cable.

1. Rear Combination Light Cover
2. Backup Buzzer

1) Remove the rear combination light connector

fixing screw.

2) Remove buzzer fixing screw.
3) Disconnect the connector.

Installation
To install, follow the removal steps in the reverse order.

N8A0198E

8-218 CAB AND CHASSIS ELECTRICAL

Dome Light and Backup Buzzer

General Description

The circuit consists of the starter switch, dome light, dome light switch, door switch, backup light switch and the back-
up buzzer.
The dome light lights up when the left or right side door is opened with the switch set at the door mode. It can be lit
by operating ON or OFF of the dome light switch.
The dome light can be lit by respective switch independent of the position of the starter switch.
By operating the dome light switch fitted on the instrument panel, the dome light can be lit independent of the switch
position of dome light.

Lighting Circuit

BATTERY (+)

DOME LIGHT
(FOR CREW CAB)

DOME LIGHT

DOME
LIGHT SW

DOOR SW
(FRT PASSENGER
SIDE)

DOOR SW
(DRIVER SIDE)

: Lighting circuit by door sw

: Lighting circuit by dome light sw

OFF

ON

DOOR

N8A5236E

CAB AND CHASSIS ELECTRICAL 8-219

Parts Location

N8A5237E