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Electrical System 209
12. INSTRUMENT CLUSTER
TO REMOVE AND INSTAL
Disconnect the negative battery terminal.
Remove the retaining screws from the instru-
ment cluster surround. Carefully withdraw the instrument cluster
surround from the instrument panel sufficiently to
enable the wiring to be disconnected. Remove the
surround from the vehicle.
.
FLEXIBLE PRINTED
CIRCUIT
Rear view of the instrument cluster removed from the
vehicle.
(4) Remove the instrument cluster assembly
retaining screws and gently ease the assembly from the
instrument panel sufficiently to enable the wiring to be
disconnected.
If necessary, remove the instruments as follows:
Carefully depress the retaining clips on the
front lens and remove the front lens. On models equipped with a tachometer, slide
the plastic rib from between the speedometer and the
tachometer. Remove the screws retaining the speedome-
ter and the tachometer or fuel/temperature gauges
from the rear of the instrument cluster.
CLUSTER ASSEMBLY
(d) Withdraw both instruments from the front of
the instrument cluster being careful as these instru-
ments are held by protruding pin terminals.
NOTE: Do not touch the faces of the instru-
ment dials as they mark easily.
(e) On models equipped with a tachometer,
remove the retaining nuts and remove the tempera-
ture and/or the fuel gauge from the cluster assembly.
Installation is a reversal of the removal procedure
ensuring that all electrical connectors are correctly
installed.
13. BLOWER FAN
The removal and installation procedure for the
blower fan is described in the Cooling and Heating
Systems section.
14. RADIO/CASSETTE
TO REMOVE AND INSTAL
Disconnect the negative battery terminal.
Remove the release hole covers on each side
of the radio/cassette.
Dismantled view of the instrument cluster.
Illustration of the radio/cass ette removal tool showing
the required dimensions.
BULB HOLDERS
BULB HOLDERS
Removing the release hole covers from the radio/cas-
sette.
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210 Electrical System
Using the radio/cassette removal tools during removal of the unit.
Construct the special tools as illustrated,
insert both tools into the release holes on the radio/
cassette and carefully withdraw the radio/cassette
from the mounting bracket.
Disconnect the wiring harness terminal plug
and remove the radio/cassette.
Installation is a reversal of the removal procedure
with attention to the following points:
Remove the special tools from the radio/
cassette, connect the wiring harness terminal and push
the radio/cassette into the mounting bracket. Install the release hole covers on each side
of
the radio/cassette.
15. LAMP UNITS
HEADLAMPS
To Remove and Install
Disconnect the negative battery terminal.
If removing the drivers side headlamp on 1.8
liter engines, remove the bo lt securing the air cleaner
intake duct and remove the air cleaner intake duct.
Dismantled view of the headlamp assembly.
Remove the radiator grille as described in
the Body section. Remove the bolt and nut from the front and
rear of the inner headlamp. Remove the side indicator lamp assembly
and remove the bolts from the side of the headlamp.
Maneuver the headlamp inner side out first
and remove the headlamp from the vehicle. Installation is a reversal of the removal procedure.
To Adjust Headlamp Aim
Ensure that the tires are inflated to the
correct pressure and that the vehicle is positioned on
level ground.
The vehicle should be unladen, with a full
fuel tank and the driver sitting in the vehicle. When using a headlamp aiming machine,
refer to the manufacturers instructions for equipment
being used.
Partially removed view of the headlamp assembly. Diagram showing the correct light patterns using an
aiming board. Dimension A = 5 meters.
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Electrical System 211
When using an aiming board, position the
vehicle five meters from and square to the aiming
board. Gently rock the vehi cle and allow the suspen-
sion to stabilize. Mark a reference line on the board to
correspond with the horizontal centre line of the
headlamp low beam bulbs. Mark two reference lines on the board to
correspond with the vertical centre lines of
the
headlamp low beam bulbs. Switch on the headlamps and select low
beam. Adjust the headlamps by turning the adjust-
ing screws located at the rear of the headlamp
assemblies. Adjust the headlamps to comply with local
regulations. As a guide, adjust the lamps so that the
low beam pattern strikes the aiming board with the
horizontal cut off point 50 mm below the headlamp
bulb horizontal centre line and the point where the
beam raises from the horizontal is on the headlamp
low beam bulb vertical centre line.
To Renew Low Beam Bulb (Pulsar)
Remove the dust cover from the rear of the
headlamp assembly.
Disconnect the wiring from the end of the
bulb.
Remove the cover from the rear of the
headlamp housing. Release the retaining clip from the bulb
holder and withdraw the bulb from the headlamp. Installation is a reversal of the removal procedure
ensuring that the new bulb is correctly located in the
bulb holder.
NOTE: Care must be taken not to handle
the glass portion of the bulb as this will
shorten the life of the bulb. Accidental
fingerprints can be removed by applying
methylated spirits to the bulb and drying
with clean tissue or cloth.
To Renew High Beam Bulb (Pulsar) or
High/Low Beam Bulb (Astra) Disconnect the wiring connector and re-
move the dust cover from the rear of the headlamp. Release the retaining clip and remove the
bulb from the bulb holder. Install the new bulb to the headlamp ensur-
ing that the metal plate is correctly located in the
bulb holder.
NOTE: Care must be taken not to handle
the glass portion of the bulb as this will
shorten the life of the bulb.
Accidental fingerprints can be re-
moved by applying methylated spirits to
the bulb and drying with clean tissue or
cloth.
(4) Secure the retaining clip, install the cover to
the headlamp and connect the wiring to the end of the
bulb.
FRONT COMBINATION LAMP (PULSAR)
OR TURN SIGNAL LAMP (ASTRA)
To Renew Bulb
(1) Remove the retaining screws from the front
combination lamp and remove the lens.
Renewing the front combination lamp bulb. Pulsar models.
(2) Push the bulb inwards, turn it anti-clock-
wise and remove it from the holder. Installation is a reversal of the removal procedure.
SIDE INDICATOR LAMP (PULSAR) OR
FRONT COMBINATION LAMP (ASTRA)
To Renew Bulb
(1) Remove the retaining screws and remove
the lens cover.
Renewing the low beam bulb.
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212 Electrical System
Renewing the side indicator lamp bulb.
(2) Push the bulb inwards, turn it anti-clockwise
and remove it from the holder.
Installation is a reversal of the removal procedure.
REAR COMBINATION LAMP
To Renew Bulb
(1) Working inside the luggage compartment,
remove the combination lamp trim cover.
Renewing the rear combination lamp bulb.
Remove the desired bulb holder from the
combination lamp by twisting it anti-clockwise and
withdrawing it from the lamp body.
Push the bulb inwards, turn it anti-clockwise
and remove it from the holder.
Installation is a reversal of the removal procedure.
NUMBER PLATE LAMP
To Renew Bulb
(1) On Pulsar models, proceed as follows:
Carefully prise the number plate lamp unit
from the rear bumper bar. Remove the retaining screws and remove
the lens cover and lens.
Renewing the number plate lamp bulb.
(2) On Astra models, remove the retaining
screws and remove the lamp unit from the bumper
bar. Remove the bulb holder from the lamp unit.
(3) Remove the bulb from the lamp.
Installation is a reversal for the removal procedure.
COURTESY LAMP
To Renew Bulb
Turn the lamp lens anti-clockwise and lower
it from the lamp. Grip and remove the bulb from between the
bulb contacts.
Renewing the courtesy lamp bulb.
Installation is a reversal of the removal procedure
with attention to the following points:
Ensure that when the bulb is installed, the con-
tacts hold the bulb with enough tension to provide a
good electrical contact.
HIGH MOUNTED STOP LAMP
To Renew Bulb
(1) Remove the retaining screws from the cover
on the high mounted stop lamp and remove the cover.
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Electrical System 213
Renewing the high mounted stop lamp bulb.
Remove the bulb holder from the lamp by
twisting it anti-clockwise and removing it from the
lamp body.
Push the bulb inwards, turn it anti-clockwise
and remove it from the holder. Installation is a reversal of the removal procedure.
LUGGAGE COMPARTMENT LAMP
To Renew Bulb
Working inside the luggage compartment,
carefully prise the lens from the luggage compartment
lamp.
Remove the lamp bulb by gripping it firmly
and pulling it from the lamp socket. Installation is a reversal of the removal procedure.
Renewing the luggage compartment lamp bulb.
16. WINDSCREEN WIPER
WIPER BLADE
To Remove and Install
Pull the wiper arm away from the wind-
screen until it locks in the vertical position.
Push the pin retaining the wiper blade to the
Removing the wiper blade.
arm and slide the wiper blade along the arm towards
the pivot to allow the blade to be maneuvered from
the arm.
Installation is a reversal of the removal procedure
ensuring that the blade snaps into place as it is
installed to the wiper arm.
WIPER RUBBER
To Renew
(1) Remove the wiper blade from the vehicle as
previously described.
Renewing the wiper rubber.
Squeeze the sides of the clip retaining the
wiper rubber and spine ass embly to the wiper blade
and slide the rubber and spine assembly from the
blade. Slide the new rubber and spine assembly into
the wiper blade ensuring that the spine is engaged with
all the lugs in the blade. Install the wiper blade to the wiper arm.
WIPER ARM
To Remove and Install
(1) Remove the nut retaining the wiper arm to
the drive spindle.
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214 Electrical System
Removing the wiper arm.
(2) Using a suitable lever, carefully prise the
wiper arm from the drive spindle, taking care not to
damage the paintwork.
Installation is a reversal of the removal procedure
with attention to the following point:
Ensure that the wiper arms are installed so that
the wiper blades sweep within 10-20 mm of the
windscreen lower moulding.
WIPER LINKAGE
To Remove and Install
Remove both windscreen wiper arms as
previously described.
Carefully prise the wiper arm drive linkage
from the ball stud on the wiper motor driving crank. Remove the retaining nuts and metal spacers
from the wiper arm dr ive spindle housings.
Maneuver both drive spindle housings into
the plenum chamber taking care not to damage the
paintwork. Ensure that th e water seals on the spindle
housings arc not lost during the removal procedure.
Remove the assembly from the vehicle. Installation is a reversal of the removal procedure.
WINDSCREEN WIPER MOTOR
To Remove and Install
(1) Disconnect the negative battery terminal.
Carefully prise the wiper arm drive linkage
from the ball stud on the wiper motor driving crank.
Disconnect the wiring from the wiper motor
at the connector socket. Remove the wiper motor retaining screws
and remove the wiper motor from the vehicle. Installation is a reversal of the removal procedure.
REAR WIPER MOTOR
To Remove and Install
Remove the wiper arm and blade assembly
from the pivot as previously described. Remove the nut retaining the pivot to the
rear window. Using a flat bladed screwdriver, prise out the
clips retaining the trim pane! to the interior of the
tailgate and carefully wit hdraw the trim panel from
the vehicle. Depress the lock tab and disconnect the
wiring connector. Remove the bolts retaining the wiper motor
mounting bracket to the tailgate and withdraw the
wiper motor and mounting bracket from the vehicle.
Installation is a reversal of the removal procedure
with attention to the following points:
Installed view of the windscreen wiper motor.
Installed view of the rear wiper motor.
Removing the rear wiper arm.
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Electrical System 215
Ensure that the wiper motor is in the Park
position before installing the wiper arm. If in doubt,
turn the wiper switch to the Off position and turn the
ignition switch to the On position until the wiper
motor stops.
Install the wiper arm to the pivot so that the
wiper blade is horizontal to the lower edge of the edge
of the rear window when in the Park position.
17. FUSES, FUSIBLE LINKS AND RELAYS
TO CHECK AND RENEW FUSE
NOTE: If a fuse is found to be faulty or
burnt out, use a replacement fuse of the
specified amperage only. The specified amp-
erage is marked on the fuse.
The use of a higher amperage fuse than
that specified could cause damage to the
vehicle wiring harness.
The fuses are mounted in a fuse box
located in the lower right hand corner of the
dashboard.
Remove the cover from the lower right hand
corner of the dashboard and using the information
marked on the fuse box, locate the fuse protecting the
circuit at fault. Pull the fuse out of the fuse box and inspect
it for serviceability.
Should the fuse appear to be in a serviceable
condition, test its continuity with an ohmmeter or test
lamp. Should the fuse be faulty or burnt out,
install
a new fuse of the same amperage. If the circuit is still inoperative or the fuse
burns out again, test the circuit as previously de-
scribed in this section or refer the problem to an
automotive electrician.
TO CHECK AND RENEW FUSIBLE LINK
NOTE: If a fusible link is found to be faulty
or burnt out, use a genuine replacement
fusible link of the specified amperage only.
The use of a higher amperage fusible link
than that specified could cause damage to
the vehicle wiring harness.
A new fusible link should never be in-
stalled until the fault which caused the
original link to fail has been repaired.
The fusible links installed to protect the
vehicles wiring system are located adjacent
to the washer bottle on the right hand inner
mudguard.
Disconnect the negative battery terminal
Check the fusible link visually for service-
ability.
Should the fusible link appear to be in a
serviceable condition, test its continuity using
an
ohmmeter or a test lamp. If the fusible link proves to be faulty, install
a
new fusible link and have an assistant temporarily
connect the battery while the circuit is checked for
operation.
View of the fuse box cover showing the fuse identifi-
cation label. Installed view of the fusible links.
View of the fuse box.
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216 Electrical System
NOTE: While checking the operation of the
fusible link, loosely connect the battery-
terminal only, to safeguard against damage
to the wiring harness.
(5) If the circuit is still inoperative or the fusible
link burns out again, refer the problem to an auto-
motive electrician.
RELAY LOCATIONS
The various relays employed in the vehicle elec-
trical system are located behind the fusible links
adjacent to the washer bottle in the engine compart-
ment, on the engine compartment bulkhead, under
the windscreen wiper motor and in the fuse box at the
lower right hand side of the dashboard.
The engine compartment relays power the radia-
tor fan, horn, condenser fan, bulb check, automatic
transaxle neutral safety switch, air conditioner and
condenser motor.
Installed view of the fuse box relays.
The fuse box relays power the fuel pump, ignition,
some accessories and the el ectronic control module.
18. TRAILER WIRING
There are several brands of trailer wiring connec-
tors available with a variet y of pin configurations. The
most common is the seven pin type which provides
for two auxiliary circuits, usually used for reverse
lamps and electric trailer brakes.
Installed view of the engine compartment relays.
Installed view of the engine compartment relays.
Useful connections which can be used if the trailer to
be towed is fitted with different type plug to the towing
vehicle socket
Brylite seven pin trailer plug and socket.