length FORD SIERRA 1990 2.G Body Electrical System Workshop Manual

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7The cable can now be withdrawn from the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

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

1On models fitted with an electric aerial,
disconnect the battery negative lead.
Saloon and Estate models
2Remove the right-hand side trim panel from
the luggage compartment.
3Working outside the vehicle, unscrew the
nut and remove the spacer and seal from the
base of the aerial.
4Working inside the luggage compartment,
either unscrew the aerial bracket securing
screw and slide the bracket from the aerial
tube, or pull the base of the aerial from the
rubber bush in the bracket, as applicable (see
illustration).
5Ensure that the aerial is fully retracted, then
pull it through the hole in the bodywork into
the luggage compartment (see illustration).
6The aerial lead may be a push-fit in the
base of the aerial, or may be secured by a
knurled nut. Disconnect the aerial lead and
where applicable, disconnect the wiring from
the electric motor. Note that the aerial lead
runs through the roof. If it is necessary to
renew the lead, it may prove easier to leave
the old lead in place and run a new one under
the carpet. Follow existing wiring runs where
possible.
7Refitting is a reversal of removal.
Hatchback models
8Remove the right-hand rear seat side
cushion.
9Remove the rear parcel shelf.
10On “high specification” models, lift the
seat catch release lever, push out the pin
securing the link rod to the lever and
disconnect the link rod.
11Remove the securing screws from the rear
parcel shelf support (nine screws on models
up to 1987, eight screws from 1987 onwards).
Remove the rear parcel shelf support.
12Remove the side trim panel from the
luggage compartment.
13Proceed as described in paragraphs 3 to
7 inclusive.
P100 models
14Pull off the plastic trim cover and unscrew
the aerial securing nut.
15Withdraw the aerial assembly, and
carefully prise the base seal from the roof
panel.
16The aerial lead runs across the roof panel
under the headlining, and down the right-hand
front pillar to the radio unit. Renewal is
straightforward, but the front section of the
headlining must be released for access and a
length of string should be tied to the end of
the aerial lead before removal to aid routing
when refitting.
17The aerial rod can be renewed by simply
unscrewing it from the base.
18Refitting is a reversal of removal.
1Disconnect the battery negative lead.
Saloon models
2Remove both rear seat side cushions.
3Remove the securing screws and withdraw
the rear parcel shelf.
4Make a note of the wiring connections for
use when refitting, then disconnect the wiring,
remove the two securing screws, and
withdraw the amplifier unit (see illustration).
5Refitting is a reversal of removal.
Hatchback models
6Unclip the tailgate trim panel.
7Remove the amplifier bracket securing
screws, and withdraw the amplifier through
the tailgate panel aperture (see illustration).
8Make a note of the wiring connections for
use when refitting, then disconnect the wiring
and remove the amplifier unit.
9Refitting is a reversal of removal.
Estate models
10Unclip the tailgate trim panel.
11Make a note of the wiring connections for
use when refitting, then disconnect the wiring,
remove the four securing screws, and detach
the loudspeaker/amplifier bracket assembly
from the tailgate (see illustration).
12Refitting is a reversal of removal.
1Disconnect the battery earth lead.
Facia panel-mounted speakers
Upper
2Prise the speaker grille from its four
retaining clips in the facia using a thin-bladed
screwdriver.
3Remove the four securing screws,
disconnect the wiring, and pull the
loudspeaker from the facia panel.
4Refitting is a reversal of removal.
55Loudspeakers - removal and
refitting54Integral heated rear
window/radio aerial amplifier
- removal and refitting
53Radio aerial (exterior-
mounted) - removal and
refitting
13•20Body electrical system
52.5 Seat heating pad
Thermostat (arrowed) must face foam53.5 Removing an electric aerial -
Saloon model
54.7 Integral heated rear window/radio
aerial amplifier bracket securing screws
(arrowed) - Hatchback models54.4 Integral heated rear window/radio
aerial amplifier securing screws (arrowed)
- Saloon models
53.4 Pull the base of the aerial from the
rubber bush (arrowed)