ISUZU TROOPER 1998 Service Repair Manual

8A–2LIGHTING SYSTEM
Vanity Mirror Illumination Bulb 8A–16 . . . . . . . . . . . . .
Removal 8A–16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–16 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch 8A–17 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–17 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lighting Switch (Combination Switch) 8A–18 . . . . . .
Removal 8A–18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–18 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light Switch 8A–19 . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–19 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stoplight Switch (W/O Cruise Control) 8A–20 . . . . . .
Removal 8A–20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Switch (W/Cruise Control) 8A–21 . . . . . . . . . .
Removal 8A–21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal Switch (Combination Switch) 8A–21 . . .
Removal and Installation 8A–21 . . . . . . . . . . . . . . .
Hazard Warning Switch 8A–22 . . . . . . . . . . . . . . . . . .
Removal 8A–22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 8A–22 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Switch 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Switch 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Defogger Switch 8A–24 . . . . . . . . . . . . . . . . . . .
Removal 8A–24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–24 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Heater Switch 8A–25 . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–25 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Remind Switch (Starter Switch) 8A–25 . . . . . . .
Removal and Installation 8A–25 . . . . . . . . . . . . . . .
Illumination Controller 8A–26 . . . . . . . . . . . . . . . . . . . .
Removal 8A–26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–26 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power/Winter Switch 8A–27 . . . . . . . . . . . . . . . . . . . . .
Removal 8A–27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–27 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 8A–28 . . . . . . . . . . . . .
Service Precaution
WARNING: I F S O E Q U IPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

LIGHTING SYSTEM8A–3
Headlight Bulb
Removal
1. Disconnect the battery ground cable.
2. Disconnect the connector.
3. Remove the cap(3) while turning it counter clockwise.
4. Remove the cover(2).
5. Pull the bulb(1) out from the headlight body.
CAUTION: The halogen bulb develops a very high
temperature. Do not touch the glass portion. If any
stain is on the glass surface, It will scorch and the
glass will be damaged.
801RW014
Installation
To install, follow the removal steps in the reverse order.

8A–4LIGHTING SYSTEM
Headlight
Headlight and Associated Parts
801RW003
Legend
(1) Radiator Grille
(2) Front End Lower Panel
(3) Headlight Assembly
(4) Headlight(5) Headlight Rim
(6) Headlight Bulb
(7) Rear Cover
(8) Bracket
(9) Front Combination Light
Removal
1. Disconnect the battery ground cable.
2. Remove the screw and pull out the two projecting
portions on the fender to remove the front
combination light.
3. Remove five clips and two screws to remove the
radiator grille.
4. Remove two screws to remove the front end lower
panel(2).
5. Remove two bolts and two nuts to remove the
headlight assembly (with bracket).
6. Remove the headlight bulb.
7. Remove two screws, two nuts and the spring for the
headlight aim adjustment to remove the bracket.
8. Remove four screws to remove the rear cover.
9. Remove the headlight rim.
10. Remove the headlight.
Installation
To install, follow the removal steps in the reverse order.
CAUTION: After installing the headlight, be sure to
adjust the headlight aim.
Headlight Adjustment
Preparation
Place the unloaded vehicle on a level surface and check
to see if the inflation pressure of the tires is correct, the
lenses are clean, and the battery is sufficiently charged.
Adjust the aim with the headlight tester, if necessary.
When adjusting, follow the procedure of the tester
manufacturer’s.
801RS009

LIGHTING SYSTEM8A–5
Vertical adjustment
Use a screwdriver for vertical adjustment.
801RW004
Horizontal adjustment
Use a screwdriver for horizontal adjustment.
801RW005
Fog Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Open the rear cover(1) of the case.
3. Remove the dust cover.
4. Disconnect the bulb connector.
5. Remove the clip(3).
6. Remove the fog light bulb(2).
801RW012
Installation
1. Install the fog light bulb(1).
2. Install the clip(2).
3. Connect the bulb connector.
4. Install the dust cover.
5. Close the rear cover(3) of the case.
801RW017
6. Connect the battery ground cable.

8A–6LIGHTING SYSTEM
Fog Light Assembly
Removal
1. Disconnect the battery ground cable.
2. Remove two nuts from the bracket.
3. Disconnect the connector.
4. Remove the fog light assembly (1).
825RW104
Installation
To install, follow the removal steps in the reverse order.CAUTION: After installing the fog light, be sure to
adjust the fog light aim.
Fog Light Adjustment
Turn the adjusting screw with a screwdriver to adjust the
aim of the fog light vertically.
801RW007
Clarence Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the screw at the upper portion of the light
bracket and then remove the bracket from the fender.
3. Remove the front combination light assembly(1).
4. Remove the front side marker light socket(2) by
turning it counterclockwise.
5. Pull out the bulb(3) from the socket.
801RW015
Installation
To install, follow the removal steps in the reverse order.

LIGHTING SYSTEM8A–7
Rear Fog Light Bulb (RHD)
Removal
1. Disconnect the battery ground cable.
2. Remove three screws and release locks at two
locations to remove the rear combination light
assembly(2).
3. Remove the socket(3) by turning it counterclockwise.
4. Turn the bulb(1) counterclockwise while pushing it to
remove it from the socket.
803RS005
Installation
To install, follow the removal steps in the reverse order.
Taillight Bulb (Body)
Removal
1. Disconnect the battery ground cable.
2. Remove three screws and release locks at two
locations to remove the rear combination light
assembly(2).
3. Remove the socket(3) by turning it counterclockwise.
4. Turn the bulb(1) counterclockwise while pushing it to
remove it from the socket.
803RS005
Installation
To install, follow the removal steps in the reverse order.

8A–8LIGHTING SYSTEM
Taillight Bulb (Bumper)
Removal
1. Disconnect the battery ground cable.
2. Remove two screws to remove the rear combination
light assembly(2).
3. Remove the socket(1) by turning it counterclockwise.
4. Remove the bulb(3) by turning it counterclockwise
while pushing.
803RW004
Installation
To install, follow the removal steps in the reverse order.
License Plate Light Bulb (Body)
Removal
1. Disconnect the battery ground cable.
2. Remove two screws to remove the lens(2).
3. Pull out the bulb(1) from the socket.
803RS006
Installation
To install, follow the removal steps in the reverse order.

LIGHTING SYSTEM8A–9
License Plate Light Bulb (Bumper)
Removal
1. Disconnect the battery ground cable.
2. Remove two screws to remove the license plate
light(1).
3. Pull out the bulb(3) from the socket(2).
803RW003
Installation
To install, follow the removal steps in the reverse order.
Stoplight Bulb
Removal and Installation
Refer to the Taillight Bulb in this section.

8A–10LIGHTING SYSTEM
High Mount Stoplight
Removal
1. Disconnect the battery ground cable.
2. Remove the clips(2).
3. Pull out the high mount stoplight(1).
4. Remove the connector.
5. Remove the high mount stoplight.
803RS003
Installation
1. Insert the clips(1)(3) into the high mount stoplight(2).
2. Reconnect the connector.
3. Install the high mount stoplight.
803RS004
Front Turn Signal Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the screw at the upper portion of the light
bracket, and remove the bracket from the fender.
3. Remove the front combination light(1).
4. Remove the turn signal light socket(3) by turning it
counterclockwise.
5. Remove the bulb(2) by turning it counterclockwise
while pushing it at the same time.
801RS002
Installation
To install, follow the removal steps in the reverse order.

LIGHTING SYSTEM8A–11
Side Turn Signal Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Pull the light/bulb(1) toward you while pushing the
light housing in the rear direction of the vehicle to
release its lock.
3. Remove the bulb by turning it counterclockwise while
pushing it at the same time.
801RW013
Installation
To install, follow the removal steps in the reverse order.
Rear Turn Signal Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the three screws and release the lock at two
positions.
3. Remove the rear combination light(3).
4. Remove the turn signal light socket/bulb(1) by turning
it counterclockwise.
5. Remove the bulb(2) by turning it counterclockwise
while pushing it at the same time.
803RS002
Installation
To install, follow the removal steps in the reverse order.