headlamp FORD SIERRA 1986 1.G Body Electrical System Workshop Manual

Chapter 13
Body electrical system
Anti-theft alarm - location, removal and refitting . . . . . . . . . . . . . . . .51
Auxiliary warning system components - location, testing, removal and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Brake lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Central door locking components - operation, removal and refitting .50
Cigarette lighter - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Clock - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Courtesy lamp and luggage compartment lamp - renewal . . . . . . . .25
Courtesy lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Direction indicator and hazard warning flasher switch assembly -
renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Direction indicator/hazard warning flasher relay - renewal . . . . . . . . .6
Electrical door mirror switch - removal and refitting . . . . . . . . . . . . .10
Electrical fault finding - general information . . . . . . . . . . . . . . . . . . . . .2
Electric sunroof components - removal and refitting . . . . . . . . . . . . .17
Electric window components - removal and refitting . . . . . . . . . . . . .49
Exterior lamp bulbs - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Facia panel switches - removal and refitting . . . . . . . . . . . . . . . . . . . .9
Front direction indicator lamp unit - removal and refitting . . . . . . . . .44
Front direction indicator side repeater lamp - removal and refitting . .45
Front foglamps - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .46
Fuses and relays - location and renewal . . . . . . . . . . . . . . . . . . . . . . .3
General information and precautions . . . . . . . . . . . . . . . . . . . . . . . . .1
Handbrake “on” warning lamp switch - renewal . . . . . . . . . . . . . . . .14
Headlamps - alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Headlamp unit - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .41
Headlamp wiper motor - removal and refitting . . . . . . . . . . . . . . . . . .40
Horn - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Horn switch assembly - removal and refitting . . . . . . . . . . . . . . . . . .11
Ignition switch and lock barrel - removal and refitting . . . . . . . . . . . . .4
Instrument panel - removal and refitting . . . . . . . . . . . . . . . . . . . . . .20Instrument panel components - removal and refitting . . . . . . . . . . . .21
Integral heated rear window/radio aerial amplifier - removal and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Interior lamp bulbs - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Lighting and wash/wipe switch assembly - renewal. . . . . . . . . . . . . . .7
“Lights-on” warning module - renewal . . . . . . . . . . . . . . . . . . . . . . . .24
Loudspeakers - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . .55
Luggage compartment lamp switch - removal and refitting . . . . . . .13
Map reading lamp - removal and refitting . . . . . . . . . . . . . . . . . . . . .26
Oil pressure warning lamp switch - renewal . . . . . . . . . . . . . . . . . . . .16
Radio aerial (exterior-mounted) - removal and refitting . . . . . . . . . . .53
Radio/cassette player - removal and refitting . . . . . . . . . . . . . . . . . . .57
Radio/cassette player power amplifier - removal and refitting . . . . . .56
Rear lamp unit - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . .43
Rear number plate lamp - removal and refitting . . . . . . . . . . . . . . . . .47
Rear window washer fluid reservoir - removal and refitting . . . . . . . .39
Rear window washer pump - removal and refitting . . . . . . . . . . . . . .38
Rear window wiper motor - removal and refitting . . . . . . . . . . . . . . .37
Reversing lamp switch - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Seat heating pad - removal and refitting . . . . . . . . . . . . . . . . . . . . . .52
Speedometer cable - removal and refitting . . . . . . . . . . . . . . . . . . . .30
Trip computer components - removal and refitting . . . . . . . . . . . . . .22
Underbonnet lamp - removal, refitting and bulb renewal . . . . . . . . . .28
Washer nozzles - removal and refitting . . . . . . . . . . . . . . . . . . . . . . .33
Windscreen/headlamp washer fluid reservoir - removal and refitting . .36
Windscreen/headlamp washer pump - removal and refitting . . . . . .35
Windscreen wiper motor and linkage - removal and refitting . . . . . . .34
Wiper arms - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Wiper blades - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Wiring diagrams - general information . . . . . . . . . . . . . . . . . . . . . . . .58
13•1
Contents
13Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert
DIY or professional
Degrees of difficulty

System type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 volt, negative earth
BulbsFittingsWattage
Halogen headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H460/55
Auxiliary driving lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H355
Front foglamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H355
Side lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base5
Direction indicator lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet21
Brake/tail lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet21/4
Reversing lamp(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet21
Rear foglamp(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet21
Rear number plate lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base5
Luggage compartment lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet10
Underbonnet lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet10
Courtesy lamp(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet10
Map reading lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base5
Vanity mirror illumination lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Festoon3
Glove compartment lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base3
Ashtray lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base1.2
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base1.2 or 2.5
Instrument illumination lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base1.2 or 2.5
Heater control illumination lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base1
Automatic transmission gear selector lamp . . . . . . . . . . . . . . . . . . . . . .Bayonet1.2
Clock illumination lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bayonet1.4
Cigarette lighter lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass base1.2
Torque wrench settingsNmlbf ft
Trip computer fuel flow sensor unit fuel pipe unions . . . . . . . . . . . . . . .14 to 1710 to 13
General information
The electrical system is of the 12 volt.
negative earth type. Electricity is generated by
an alternator, belt-driven from the crankshaft
pulley. A lead-acid storage battery provides a
reserve of power for starting and when the
demands of the system temporarily exceed
the alternator output.
The battery negative terminal is connected
to “earth” - vehicle metal - and most electrical
system components are wired so that they
only receive a positive feed, the current
returning via vehicle metal. This means that
the component mounting forms part of the
circuit. Loose or corroded mountings can
therefore cause apparent electrical faults.
Many semiconductor devices are used in
the electrical system, both in the “black
boxes” which control vehicle functions and in
other components. Semiconductors are very
sensitive to excessive (or wrong polarity)
voltage, and to extremes of heat. Observe the
appropriate precautions to avoid damage.
Precautions
It is necessary to take extra care when
working on the electrical system to avoid
damage to semi-conductor devices (diodes
and transistors), and to avoid the risk of
personal injury. In addition to the precautions
given in the
“Safety first!” Section at the
beginning of this manual, take note of the
following points when working on the system.
Always remove rings, watches, etc before
working on the electrical system. Even withthe battery disconnected, capacitive
discharge could occur if a component live
terminal is earthed through a metal object.
This could cause a shock or nasty burn.
Do not reverse the battery connections.
Components such as the alternator or any
other having semi-conductor circuitry could
be irreparably damaged.
If the engine is being started using jump
leads and a slave battery, connect the
batteries positive to positive and negative to
negative. This also applies when connecting a
battery charger.
Never disconnect the battery terminals, or
alternator multi-plug connector, when the
engine is running.
The battery leads and alternator multi-plug
must be disconnected before carrying out any
electric welding on the car.
Never use an ohmmeter of the type
incorporating a hand cranked generator for
circuit or continuity testing.
Note:Refer to the precautions given in “Safety
first!” and in Section 1 of this Chapter before
starting work. The following tests relate to testing
of the main electrical circuits, and should not be
used to test delicate electronic circuits (such as
anti-lock braking systems), particularly where an
electronic control unit (ECU) is involved.General
1A typical electrical circuit consists of an
electrical component, any switches, relays,
motors, fuses, fusible links or circuit breakers
related to that component, and the wiring andconnectors which link the component to both
the battery and the chassis. To help to pinpoint a
problem in an electrical circuit, wiring diagrams
are included at the end of this Chapter.
2Before attempting to diagnose an electrical
fault, first study the appropriate wiring
diagram, to obtain a more complete
understanding of the components included in
the particular circuit concerned. The possible
sources of a fault can be narrowed down by
noting whether other components related to
the circuit are operating properly. If several
components or circuits fail at one time, the
problem is likely to be related to a shared fuse
or earth connection.
3Electrical problems usually stem from
simple causes, such as loose or corroded
connections, a faulty earth connection, a
blown fuse, a melted fusible link, or a faulty
relay. Visually inspect the condition of all
fuses, wires and connections in a problem
circuit before testing the components. Use
the wiring diagrams to determine which
terminal connections will need to be checked,
in order to pinpoint the trouble-spot.
4The basic tools required for electrical fault-
finding include: a circuit tester or voltmeter (a
12-volt bulb with a set of test leads can also
be used for certain tests), a self-powered test
light (sometimes known as a continuity tester),
an ohmmeter (to measure resistance), a
battery and set of test leads, and a jumper
wire, preferably with a circuit breaker or fuse
incorporated, which can be used to bypass
suspect wires or electrical components.
Before attempting to locate a problem with
test instruments, use the wiring diagram to
determine where to make the connections.
2Electrical fault-finding - general
information
1General information and
precautions
13•2Body electrical system
Specifications

Clock illumination lamp
26Remove the clock.
27The bulb is a bayonet fit in the rear of the
clock.
28Refitting is a reversal of removal.
1Disconnect the battery negative lead.
Removal and refitting
2Detach the wiring connector at the left-hand
bonnet hinge, and attach a length of string to
the end of the wire running from the lamp.
3If necessary, remove the underbonnet
insulation by prising out the two-piece plastic
securing clips, then working at the lamp, pull the
wiring and the string through the bonnet panel.
4Detach the string from the end of the wire,
and remove the screw securing the lamp to
the bonnet. Withdraw the lamp.
5Commence refitting by attaching the end of
the wiring to the string, and pulling the string
and wiring through the bonnet panel. Further
refitting is a reversal of removal.
Bulb renewal
6Simply press and twist the bulb to remove it
from the bulbholder (see illustration).
7Refitting is a reversal of removal.
Removal
1The horn(s) is/are located in front of the
radiator beneath the front panel (see
illustration). The horn(s) may be located on
either side of the vehicle depending on model.
2Disconnect the battery negative lead.
3Disconnect the wiring from the horn, then
unscrew the securing nut and washer and
withdraw the horn and bracket assembly
complete.
4Repeat the operations for the remaining
horn where applicable.
Refitting
5Refitting is a reversal of removal.
Removal
1On models fitted with a trip computer,
remove the speed sender unit.
2Remove the instrument panel.
3Pull the cable through the bulkhead into the
engine compartment, and where applicable
release it from the securing clips. On models
fitted with a trip computer, the upper section
of the cable can now be removed.
4Apply the handbrake, jack up the front of
the vehicle and support on axle stands (see
“Jacking and Vehicle Support”).
5On vehicles with a manual gearbox, extract
the circlip securing the cable end to the
extension housing and withdraw the cable
end (see illustration).
6On vehicles with automatic transmission,
remove the securing screw and disconnect
the cable end from the extension housing.
7The cable can now be withdrawn from the
vehicle, noting its routing so that it can be
refitted in the same position.
Refitting
8Refitting is a reversal of removal, but where
applicable, ensure that the speedometer
cable rubber sleeve is in place over the square
inner drive on the cable connector, and not in
the speedometer head. Position the cable so
that the coloured bands on the cable sheath
line up with the bulkhead grommet and the
clips in the engine compartment. Route the
cable as noted during removal.9On completion, pull the speedometer cable
from within the engine compartment to ensure
that the cable is straight between the
instrument panel and the bulkhead grommet.
1The wiper blades should be renewed when
they no longer clean the glass effectively.
2Lift the wiper arm away from the glass.
3With the blade at 90º to the arm, depress
the spring clip and slide the blade clear of the
hook, then slide the blade up off the arm.
4If necessary extract the two metal inserts
and unhook the wiper rubber.
5Fit the new rubber and blade in reverse
order, making sure where necessary that the
cut-outs in the metal inserts face each other.
Windscreen and rear wipers
1Lift the hinged covers and remove the nuts
and washers securing the arms to the spindles.
2Mark the arms and spindles in relation to each
other then prise off the arms using a screwdriver.
Take care not to damage the paintwork.
3Refitting is a reversal of removal.
Headlamp wipers
4The procedure is as described in
paragraphs 1 to 3, but the washer hose must
be disconnected from the nozzle on the wiper
arm (see illustration).
32Wiper arms - removal and
refitting
31Wiper blades - renewal
30Speedometer cable - removal
and refitting
29Horn - removal and refitting
28Underbonnet lamp - removal,
refitting and bulb renewal
Body electrical system 13•11
13
29.1 Horn location beneath front panel
30.5 Speedometer cable end fitting in
manual gearbox extension housing
28.6 Removing an underbonnet lamp bulb27.24 Removing a luggage compartment
lamp bulb
32.4 Removing a headlamp wiper arm

Windscreen and rear window
washers
1To remove a nozzle, carefully prise it from
its location using a thin-bladed screwdriver.
Disconnect the washer hose and withdraw the
nozzle.
2To refit, reconnect the washer hose to the
nozzle, and push the nozzle into its locating
hole.
3The nozzles can be adjusted by inserting a
pin into the jet and swivelling to the required
position.
Headlamp washers
Models up to 1987
4Remove the radiator grille panel.
5Disconnect the washer hose from the
nozzle.
6Separate the upper and lower halves of the
nozzle by prising apart with a thin-bladed
screwdriver, then withdraw the nozzle halves.
7Refitting is a reversal of removal.
8The nozzles can be adjusted as described
in paragraph 3.
Models from 1987
9Disconnect the washer hose from the
nozzle on the end of the wiper arm.
10Prise the combined wiper blade mounting
and nozzle from the wiper arm using a thin-
bladed screwdriver or a pair of pliers.
11Refitting is a reversal of removal.
12Note that the nozzles are not adjustable.
Removal
1Disconnect the battery negative lead.
2Remove the wiper arms.
3Remove the windscreen cowl panel.
4Disconnect the wiring plug from the motor.
5Remove the seven securing screws, and
withdraw the mounting bracket together with
the linkage and motor (see illustration). 6Unscrew the nut securing the link arm to
the motor shaft, then remove the three
securing bolts, and withdraw the motor from
the mounting bracket.
Refitting
7Refitting is a reversal of removal.
Removal
1Where headlamp washers are fitted, a
separate pump is used. The pump(s) is/are a
push-fit in the base of the washer fluid
reservoir (see illustration).
2Disconnect the battery negative lead.
3To remove a pump, syphon out the
contents of the reservoir, then pull the pump
from its grommet.
4Disconnect the wiring plug and the washer
hose.
Refitting
5Refitting is a reversal of removal, using a
new grommet if necessary. Use a little liquid
detergent as a lubricant.
6On completion, refill the reservoir and
check for correct operation.
1Where headlamp washers are fitted, a
combined windscreen/headlamp washer fluid
reservoir is used. On models up to 1987, the
reservoir is mounted on the right-hand side of
the engine compartment. On models from
1987, the reservoir is mounted under the
right-hand front wing, but has a filler within
the engine compartment.
2Disconnect the battery negative lead.
Models up to 1987
3Syphon out the contents of the reservoir, and
disconnect the wiring plug(s) and washer hose(s).
4Remove the two or three reservoir retaining
screws, as applicable, then withdraw the
reservoir.5Refitting is a reversal of removal.
Models from 1987
6Proceed as described in paragraph 3.
7Working under the front wing, remove the
three reservoir securing screws and pull the
reservoir down slightly. On vehicles fitted with
front foglamps, the bumper must be removed.
8Withdraw the reservoir.
9Refitting is a reversal of removal.
Hatchback models
1Disconnect the battery negative lead.
2Remove the wiper arm.
3Open the tailgate; remove the trim panel.
4Unscrew the earth lead and disconnect the
wiring plug from the motor.
5Remove the three securing bolts and
withdraw the mounting bracket and motor
from the tailgate (see illustration).
6The motor can be separated from the
mounting bracket by removing the three
securing bolts.
7Refitting is a reversal of removal.
Estate models
8The procedure is as described for
Hatchback models except that the washer
hose must be disconnected from the motor
assembly, and the mounting bracket is
secured by four bolts.
The procedure is as described for the
windscreen/headlamp washer pump.
Removal
1On models from 1987, the rear window
washer circuit shares the same reservoir as
the windscreen/headlamp washers.
39Rear window washer fluid
reservoir - removal and
refitting
38Rear window washer pump -
removal and refitting
37Rear window wiper motor -
removal and refitting
36Windscreen/headlamp
washer fluid reservoir -
removal and refitting
35Windscreen/headlamp
washer pump - removal and
refitting
34Windscreen wiper motor and
linkage - removal and refitting
33Washer nozzles - removal and
refitting
13•12Body electrical system
35.1 Windscreen washer pump - models
from 198737.5 Rear window wiper motor location -
mounting bracket securing bolts arrowed34.5 Windscreen wiper motor bracket
securing screws (arrowed)

2On models up to 1987, the reservoir is
located behind the trim panel on the left-hand
side of the luggage compartment (see
illustration). To remove the reservoir proceed
as follows.
3Disconnect the battery negative lead.
4Remove the trim panel.
5Operate the washers to reduce the fluid
level in the reservoir.
6Remove the reservoir filler cap, and
disconnect the wiring plug and water hose.
7Remove the two securing screws and
withdraw the reservoir.
Refitting
8Refitting is a reversal of removal.
Note: On vehicles fitted with foglamps, the
headlamp unit must be removed when the right-
hand headlamp wiper motor is to be removed.
Removal
1Disconnect the battery negative lead.
2Disconnect the washer hose from the
nozzle on the end of the wiper arm, then
remove the wiper arm.
3Pull the washer hose and retainer from the
end of the motor shaft.
4Remove the radiator grille panel.
5Where applicable, prise the trim strip from
the bottom of the headlamp unit for access to
the wiper motor mounting bolts (see
illustrations). 6Remove the two mounting bolts, then
working under the wheel arch, slide the wiper
motor rearwards, disconnect the wiring plug
and withdraw the motor.
Refitting
7Refitting is a reversal of removal, but on
completion adjust the free length of the
washer hose between the nozzle and the
retainer on the motor shaft.
1Disconnect the battery negative lead.
2Remove the radiator grille panel.
Models up to 1987
3Disconnect the headlamp wiring plug(s)
(see illustration).4Remove the three or four headlamp
securing bolts, as applicable, and the lower
sliding clamp bracket bolt on the rear of the
headlamp, then withdraw the headlamp (see
illustrations).
5If required, the headlamp lens can be
removed by releasing the spring clips around
its edge.
6Refitting is a reversal of removal, but the
headlamp securing bolts should not be
tightened until the headlamp is aligned with
the front grille panel.
7On completion, check the headlamp
alignment.
Models from 1987
8Disconnect the headlamp wiring plug(s)
(see illustration).
9Where applicable, remove the headlamp
wiper motor.
41Headlamp unit - removal and
refitting
40Headlamp wiper motor -
removal and refitting
Body electrical system 13•13
13
40.5b . . . for access to the headlamp wiper
motor mounting bolts
41.4d . . . then withdraw the headlamp unit
- models up to 198741.4c . . . and the lower sliding clamp
bracket bolt . . .41.4b . . . the rear securing bolt . . .
41.4a Remove the upper headlamp
securing bolts (arrowed) . . .41.3 Disconnect the headlamp wiring plug
- models up to 1987
40.5a Prise the trim strip from the bottom
of the headlamp unit . . .39.2 Rear window washer fluid reservoir
location - Hatchback models up to 1987.
Securing screws arrowed

10Remove the headlamp securing bolt and
the two nuts, then release the anchor spring
and withdraw the direction indicator !amp unit
(see illustrations).
11Pull the headlamp forwards, then swivel it
and remove it sideways.
12If required, the headlamp lens can be
removed by releasing the spring clips around
its edge.
13Refitting is a reversal of removal.
14On completion, check the headlamp
alignment.
1It is recommended that the headlamp
alignment is carried out by a Ford dealer using
specialist beam setting equipment. However,
in an emergency the following procedure will
provide an acceptable light pattern.
2With the vehicle unladen, with a full tank of
fuel, and with the tyres correctly inflated,
position the vehicle approximately 10 metres(33 feet) in front of, and at right-angles to, a
wall or garage door.
3Draw a vertical line on the wall
corresponding to the centre line of the car.
The position of the line can be ascertained by
marking the centre of the front and rear
screens with crayon then viewing the wall
from the rear of the car.
4Complete the lines shown (see
illustration).
5Switch the headlamps on dipped beam and
adjust them as necessary using the knobs
located behind the headlamps (see
illustration). Cover the headlamp not being
checked with cloth.
1Disconnect the battery negative lead.
Saloon and Hatchback models
2Working inside the luggage compartment,
press the plastic retaining tab and remove thebulbholder assembly.
3Disconnect the wiring plug from the
bulbholder.
4Unscrew the securing nuts, and withdraw
the rear lamp unit from outside the vehicle.
Recover the gasket.
5Refitting is a reversal of removal.
Estate models
6Working inside the luggage compartment,
turn the retaining tabs a quarter-turn and
remove the rear side trim panel cover.
7Push out the retaining tabs and withdraw
the bulbholder.
8Disconnect the wiring plug from the
bulbholder.
9Unscrew the four securing nuts, and
withdraw the rear lamp unit from outside the
vehicle. Recover the gasket.
10Refitting is a reversal of removal.
43Rear lamp unit - removal and
refitting
42Headlamps - alignment
13•14Body electrical system
41.8 Disconnect the headlamp wiring plug
- models from 198741.10b . . . the upper securing nut . . .
42.5 Adjusting the headlamp alignment
42.4 Headlamp alignment chart
A Distance between headlamp centres
B Light/dark boundary
C Centre of dipped beam
D Dipped beam patternH Height of headlamp centre from ground
X = 160.0 mm (6.3 in) for all models up to 1987
120.0 mm (4.7 in) for all models from 1987
41.10c . . . and the side securing nut -
models from 1987
41.10a Remove the headlamp rear
securing bolt . . .

P100 models
11Remove the two securing screws and
detach the rear lamp wiring cover from the
side of the cargo area(see illustration).
12Working through the cargo area aperture,
unscrew the two wing nuts and remove the
rear lamp cover.
13Disconnect the wiring plug from the back
of the lamp unit.
14Unscrew the four securing nuts and
withdraw the lamp unit from outside the cargo
area. Recover the gasket.
15Refitting is a reversal of removal, but
ensure that the plastic washer between the
wiring plug and the lamp unit is seated
correctly, and make sure that the wiring
protective sheath is seated correctly in the
opening in the lamp cover.
1Disconnect the battery negative lead.
Models up to 1987
Low specification
2Push the lamp unit rearwards into the
bumper until the plastic retaining tang is heard
to click in the locked position.
3Withdraw the lamp unit from the front of the
bumper and disconnect the wiring plug (see
illustration).
4Commence refitting by reconnecting the
wiring plug.
5Release the retaining tang, then refit the
lamp unit to the bumper, ensuring that the
pivot on the lamp unit engages with the slot in
the bumper. Reconnect the battery.
High specification
6Press the release lever at the top of the
lamp unit upwards, and withdraw the unit
from the bumper. Disconnect the wiring plug.
7To refit, reconnect the wiring plug, then
push the lamp unit into the bumper until it
locates securely. Reconnect the battery.
All models from 1987
8Working in the engine compartment,
unhook the lamp unit anchor spring from itsanchorage next to the headlamp, then
withdraw the lamp unit sideways from its
recess (see illustrations). Disconnect the
bulbholder by twisting it anti-clockwise.
9Refitting is a reversal of removal, but ensure
that the locating pins on the lamp unit engage
with the corresponding holes in the headlamp
mounting panel.
1Disconnect the battery negative lead.
Models up to 1987
2To improve access, turn the steering onto
full lock.
3Remove the relevant wheel arch liner.
4Working under the wheel arch, depress the
retaining tabs and withdraw the lamp through
the outside of the wing (see illustration).
Disconnect the bulbholder by twisting it anti-
clockwise.
5Refitting is a reversal of removal.
Models from 1987
6To improve access, turn the steering onto
full lock.
7Working in the engine compartment,
disconnect the wiring plug.
8Remove the relevant wheel arch liner.
9Working under the wheel arch, twist the
lamp clockwise and withdraw it through theoutside of the wing. Feed the wiring through
the holes in the wing panels.
10Refitting is a reversal of removal.
1Disconnect the battery negative lead.
Models up to 1987
2Remove the relevant front direction
indicator lamp unit.
3Release the retaining catch on the inside
edge of the lamp, then withdraw the lamp
from the bumper and disconnect the wiring
plug (see illustration).
4Refitting is a reversal of removal.
46Front foglamps - removal and
refitting
45Front direction indicator side
repeater lamp - removal and
refitting
44Front direction indicator
lamp unit - removal and
refitting
Body electrical system 13•15
13
44.8a Unhook the front direction indicator
lamp unit anchor spring . . .
46.3 Front foglamp removal -
models up to 1987
A Retaining catch45.4 Withdrawing a front direction
indicator side repeater lamp -
models up to 1987
44.8b . . . and withdraw the lamp unit
44.3 Withdrawing a front direction
indicator lamp unit - “low specification”
models up to 198743.11 Rear lamp wiring cover (A) and rear
lamp cover (B) - P100 models

Models from 1987
5Remove the two securing screws, then
withdraw the lamp forwards and disconnect
the two wiring plugs.
6Refitting is a reversal of removal, but where
necessary use a new gasket between the
lamp and bumper.
7On completion, the vertical alignment of the
foglamp must be adjusted. For the foglamps,
dimension “X” (see illustration, 42.4) should
be taken as 220.0 mm (8.7 in). The adjuster
screw is located on the inside edge of the
lamp above the securing screw (see
illustration).
1Disconnect the battery negative lead.
Saloon, Hatchback and Estate
models
2To remove a lamp, simply prise it from the
bumper using a thin-bladed screwdriver, and
disconnect the wiring plug (see illustration).
3Refitting is a reversal of removal.
P100 models
4Working behind the rear crossmember, pull
the wiring plug from its clip and disconnect it.
5Pull the lamp cover from the rubber
housing, then pull the rubber housing and the
wiring from the crossmember.
6Refitting is a reversal of removal.
Note: The glass envelopes of the headlamp,
auxiliary driving lamp and front foglamp bulbs
must not be touched with the fingers. If the
glass is accidentally touched, it should be
washed with methylated spirits and dried with
a soft cloth. Failure to observe this procedure
may result in premature bulb failure.
1Disconnect the battery negative lead.
Headlamps
2Working in the engine compartment,
remove the headlamp rear cover by turning it
anti-clockwise (see illustration).3Pull the wiring plug from the base of the
bulb, then release the spring clip, grasp the
bulb by its contacts and carefully withdraw it
(see illustrations). Do not touch the bulb
glass.
4Refitting is a reversal of removal, but on
models up to 1987, refit the headlamp rear
cover by aligning the arrow on the cover with
the depression on the top of the headlamp
unit and turning the cover clockwise until the
arrow aligns with the lower depression. On
models from 1987, the word “OBEN “ or
“TOP” on the rear cover should be exactly at
the top after refitting.
Sidelamps
5Working in the engine compartment,
remove the headlamp rear cover by turning it
anti-clockwise.
6Pull the sidelamp bulbholder from its
location in the headlamp reflector (seeillustration). On “high specification” models
up to 1987 a retaining tab must be depressed
before withdrawing the bulbholder. Note that
the rubber sleeve should be left in position in
the reflector.
7Refitting is as described in paragraph 4.
Auxiliary driving lamps
Models up to 1987
8Twist the cover on the top of the headlamp
unit anti-clockwise and remove it to expose
the bulb (see illustration).
9Release the bulb from the two clips, then
disconnect the wiring and remove the bulb.
Do not touch the bulb glass (see illustration).
10Refitting is a reversal of removal.
Models from 1987
11Release the spring clip securing the cover
to the rear of the headlamp unit, then remove
the cover (see illustration).
48Exterior lamp bulbs - renewal
47Rear number plate lamp -
removal and refitting
13•16Body electrical system
46.7 Front foglamp adjuster screw (A) and
securing screws (B) - models from 1987
48.2 Remove the headlamp rear cover
48.8 Auxiliary drive lamp bulb cover
(arrowed) - models up to 198748.6 Removing a sidelamp bulbholder48.3b Release the spring clip and withdraw
the headlamp bulb
48.3a Pull off the wiring plug . . .
47.2 Removing a rear number plate lamp -
Saloon, Hatchback and Estate models

12Disconnect the wiring from the bulb, then
release the spring clip and withdraw the bulb.
Do not touch the bulb glass.
13Refitting is a reversal of removal.
Front direction indicator lamps
Models up to 1987
14Remove the lamp unit.
15Twist the bulbholder anti-clockwise and
withdraw it from the rear of the lamp. The bulb
is a bayonet fit in the bulbholder (see
illustration).
16Refitting is a reversal of removal.
Models from 1987
17Remove the lamp unit.
18Release the bulbholder by pressing it and
turning clockwise, then withdraw the bulb
from the bulbholder (see illustration).
19Refitting is a reversal of removal.
Front direction indicator side
repeater lamps
Models up to 1987
20To improve access, turn the steering onto
full lock.
21Remove the relevant wheel arch liner.
22Working under the wheel arch, twist the
bulbholder anti-clockwise and withdraw it
from the lamp. The bulb is a push-fit in the
bulbholder.
23Refitting is a reversal of removal.
Models from 1987
24Remove the lamp unit. 25Twist the bulbholder anti-clockwise to
remove it from the lamp. The bulb is a push-fit
in the bulbholder.
26Refitting is a reversal of removal.
Front foglamps
27Remove the foglamp.
28On models up to 1987, remove the bulb
cover from the rear of the lamp, then release
the two spring clips, disconnect the wiring and
withdraw the bulb. Do not touch the bulb glass.
29On models from 1987, release the spring
clip and pull the bulb from the bulbholder. Do
not touch the bulb glass (see illustration).
30Refitting is a reversal of removal.
Rear lamp unit
Saloon and Hatchback models
31Working inside the luggage compartment,
press the plastic retaining tab and remove the
bulbholder assembly. The bulbs are a bayonet
fit in the bulbholder (see illustrations).
32Refitting is a reversal of removal.
Estate models
33Working inside the luggage compartment,
turn the retaining tabs a quarter-turn and
remove the rear side trim panel cover.
34Push out the retaining tabs and withdraw
the bulbholder. The bulbs are a bayonet fit in
the bulbholder.
35Refitting is a reversal of removal.
P100 models
36Remove the two securing screws and
detach the rear lamp wiring cover from the
side of the cargo area. 37Working through the cargo area aperture,
unscrew the two wing nuts and remove the
rear lamp cover.
38Twist the relevant bulbholder anti-
clockwise to remove it from the lamp. The
bulb is a bayonet fit in the bulbholder.
39Refitting is a reversal of removal, but
ensure that the wiring protective sheath is
seated correctly in the opening in the lamp
cover.
Rear number plate lamp
Saloon, Hatchback and Estate models
40Remove the lamp unit.
41Twist the bulbholder anti-clockwise to
remove it from the lamp. The bulb is a push-fit
in the bulbholder (see illustration).
42Refitting is a reversal of removal.
Body electrical system 13•17
13
48.15 Removing a front direction indicator
lamp bulb - models up to 1987
48.31b Removing a bulb from the rear lamp
bulbholder - Saloon and Hatchback
models48.31a Press the plastic retaining tab to
release the rear lamp bulbholder assembly
- Saloon and Hatchback models48.29 Front foglamp bulb retaining spring
clip - models from 1987
48.18 Removing a front direction indicator
lamp bulb - models from 1987
48.11 Auxiliary driving lamp bulb location -
models from 198748.9 Withdraw the auxiliary driving lamp
bulb from the headlamp unit -
models up to 1987