tow FORD SIERRA 1985 1.G Body Electrical System Workshop Manual

7Unclip the switch from the lock assembly,
disconnect the wiring plug and remove the
switch.
8Refitting is a reversal of removal.
1Disconnect the battery negative lead.
2Working inside the vehicle, remove the
handbrake lever rubber gaiter and/or the
centre console, as necessary.
3Disconnect the wiring connector from the
switch, then remove the two securing screws
and withdraw the switch from the handbrake
lever (see illustration).
4Refitting is a reversal of removal.
1Disconnect the battery negative lead.
2Unclip the trim panel from the lower edge of
the driver’s side lower facia trim panel. If
required for improved access, remove the
lower facia trim panel.
3Disconnect the wiring from the terminal on
the switch, then twist the switch anti-
clockwise and remove it (see illustration).
4When refitting, insert the switch into its
aperture in the pedal bracket, then push the
switch inwards until the switch barrel touches
the pedal. Ensure that the pedal is not moved
from its stop. Twist the switch clockwise to lock
it in position. No further adjustment is necessary.
5Further refitting is a reversal of removal, but
check the operation of the switch on
completion.
1Disconnect the battery negative lead.
2The switch is located towards the left-hand
rear of the cylinder block on SOHC models
(see illustration), towards the right-hand rear
of the cylinder block on CVH models and on
the right-hand side of the cylinder block,
between the core plugs, on DOHC models.3Disconnect the wiring from the switch
terminal, then unscrew and withdraw the
switch. Be prepared for some oil spillage.
4Clean the threads of the switch and its seat
before refitting.
5After refitting, run the engine and check for
oil leaks around the switch, then stop the
engine and check the oil level, topping-up if
necessary.
Switch
1Disconnect the battery negative lead.
2Using a thin-bladed screwdriver, carefully
prise the switch from the overhead console.
3Disconnect the wiring plug and remove the
switch.
4Refitting is a reversal of removal.
Relay
5Remove the overhead console.
6Unclip the relay from the motor assembly
and disconnect the wiring plug (see
illustration).
7Refitting is a reversal of removal.
Motor
8Remove the overhead console.
9Disconnect the motor wiring plug.
10Unscrew the three securing bolts, and
withdraw the motor assembly from the roof.
11Refitting is a reversal of removal, but
ensure that the drive gear is aligned with the
roof operating mechanism.1Disconnect the battery negative lead.
2Working behind the facia panel, disconnect
the wiring, then push out the lighter assembly
through the front of the facia panel.
3If required, the illumination ring assembly
can now be withdrawn after removing the
bulbholder.
4Refitting is a reversal of removal.
1Disconnect the battery negative lead.
Standard clock
2Using a thin-bladed screwdriver, carefully
prise the clock from the facia panel.
3Disconnect the wiring plug and withdraw
the clock.
4Refitting is a reversal of removal.
Multi-function digital/analogue
clock
5Remove the single screw from the top edge
of the facia panel in which the clock is
housed, then withdraw the facia panel.
6Remove the four now exposed securing
screws, disconnect the wiring plug, and
withdraw the clock (see illustration).
7Refitting is a reversal of removal.
19Clock - removal and refitting
18Cigarette lighter - renewal
17Electric sunroof components
- removal and refitting
16Oil pressure warning lamp
switch - renewal
15Brake lamp switch - renewal
14Handbrake “on” warning
lamp switch - renewal
13•6Body electrical system
14.3 Handbrake “on” warning lamp switch
location (arrowed)
16.2 Oil pressure warning lamp switch
location (arrowed) - SOHC engine19.6 Multi-function digital/analogue clock
securing screws (arrowed)17.6 Electric sunroof relay (A) and motor
securing bolts (B)
15.3 Brake lamp switch location (arrowed)

Models up to 1992
1Disconnect the battery negative lead.
2Remove the securing screws and unclip the
lower and upper steering column shrouds.
3Where applicable, remove the instrument
panel illumination and intermittent wiper
rheostats.
4Unclip the cover for access to the lower
right-hand instrument panel surround
securing screw (see illustrations).
5Remove the two upper and two lower
securing screws, and withdraw the instrument
panel surround (see illustration).
6On models fitted with a trip computer,
unscrew the knurled nut and disconnect thespeedometer cable from the speed sender
unit on the engine compartment bulkhead.
7Detach the speedometer cable grommet
from the engine compartment bulkhead.
8Remove the two upper and two lower
securing screws, and withdraw the instrument
panel sufficiently to disconnect the
speedometer cable and the wiring plugs. The
speedometer cable can be released by
pushing the ribbed surface towards the centre
of the cable to free the catch. Remove the
instrument panel (see illustration).
9Refitting 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.
10On 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.
Models from 1992
11The procedure is as described above but
note that both instrument panel surround
lower securing screws are located beneath
plastic covers (see illustration).
12The steering column shrouds are secured
by six screws - five through the lower shroud,
and one through the upper shroud.
1Remove the instrument panel.
Panel illumination and warning
lamp bulbs
2Twist the relevant bulbholder anti-
clockwise and withdraw it from the printed
circuit board on the rear of the instrument
panel.
3The bulbs may be either a push-fit in the
bulbholder, or integral with the bulbholder in
which case the bulb and bulbholder must be
renewed as a unit (see illustrations).
4Refitting is a reversal of removal.
Panel lens
5Remove the three upper and three lower
securing screws and withdraw the lens from
the instrument panel.
6Refitting is a reversal of removal, but ensure
that the two locating pegs on the upper
corners of the instrument panel protrude
through the lens, and locate the lugs on the
lower edge of the lens in the cut-outs in the
instrument panel.
Printed circuit board
7Using a thin-bladed screwdriver, unclip and
remove the wiring plug socket.
8Remove all the illumination and warning
lamp bulbs as described earlier in this
Section.
9Remove all the nuts and washers from the
printed circuit board terminals.
10Unclip the printed circuit board from the
retainers at the back of the instrument panel,
and carefully withdraw the board over the
terminal pins on the gauges.
11Refitting is a reversal of removal.
21Instrument panel components
- removal and refitting
20Instrument panel - removal
and refitting
Body electrical system 13•7
13
20.5 Removing an upper instrument panel
surround securing screw
21.3b Removing an instrument panel
illumination bulb - bulb is integral with
bulbholder21.3a Removing an instrument panel
warning lamp bulb - bulb is a push-fit in
the bulbholder20.11 Removing an instrument panel
surround lower securing screw (cover
removed)
20.8 Withdraw the instrument panel and
disconnect the wiring plugs
20.4b . . . for access to the lower right-
hand instrument panel surround securing
screw20.4a Unclip the cover . . .

Lower
5Remove the lower facia panel.
6Remove the four securing screws,
disconnect the wiring, and pull the
loudspeaker from the facia panel.
7Refitting is a reversal of removal.
Rear parcel shelf-mounted
speakers
Saloon models
8Working in the luggage compartment,
remove the single securing screw, then lift the
loudspeaker into the passenger compartment
and disconnect the wiring. Withdraw the
loudspeaker.
9Note that it is important not to disturb the
loudspeaker mounting gasket or retainer.
10Refitting is a reversal of removal, but
ensure that the wiring does not touch the
retainer, shelf, or speaker, to prevent any
audible rattles.
Hatchback models
11Working under the parcel shelf, remove
the four securing screws, disconnect the
wiring, and withdraw the loudspeaker.
12Refitting is a reversal of removal.
Door-mounted speakers
13Remove the door inner trim panel.
14Remove the four securing screws, then
withdraw the loudspeaker from the door and
disconnect the wiring. Remove the
loudspeaker.
15Do not remove the loudspeaker from the
moulding, as the two are a sealed assembly.
16Refitting is a reversal of removal.
Tailgate-mounted speakers -
Estate models
17Remove the tailgate trim panel.
18Remove the four securing screws,
disconnect the wiring and withdraw the
loudspeaker. Note that on models with an
integral heated rear window/radio aerial, the
aerial amplifier unit is combined with one of
the loudspeaker units.19Refitting is a reversal of removal.
High frequency units
20These units are used to reproduce high
frequencies only, and incorporate an
electronic filter network which must not be
disconnected or bypassed. The units are
located in the lower facia panels.
21The removal and refitting procedure is as
described for the lower facia panel-mounted
loudspeakers earlier in this Section, but take
care not to damage the extremely fragile
speaker cones.
Removal
1Some “high specification” models are fitted
with an audio power amplifier, which is
mounted as a separate unit beneath the radio/
cassette unit. To remove the unit proceed as
follows.
2Disconnect the battery negative lead.
3Remove the two screws under the top edge
of the power amplifier unit.
4Slide the unit forwards from the facia panel,
until the wiring plugs can be disconnected.
Disconnect the wiring plugs and remove the
unit.
Refitting
5Refitting is a reversal of removal.
Standard fixing
1Disconnect the battery negative lead.
2Pull off the two control knob assemblies.
3Release the trim panel by unscrewing the
two securing nuts from the control spindles.
Remove the trim panel.4Using a hooked instrument, pull the
mounting plate securing tangs towards the
centre of the radio/cassette player, then slide
the unit forwards from the facia panel (see
illustration).
5Disconnect the wiring plugs and the aerial
lead, then remove the unit.
6Remove the plastic support bracket from
the rear of the unit, and unscrew the nuts and
washers from the control spindles to remove
the mounting plate from the front of the unit.
7Refitting is a reversal of removal.
DIN fixing
8An increasing number of radio/cassette
players have DIN standard fixings. Two
special tools, obtainable from in-car
entertainment specialists, are required for
removal.
9Disconnect the battery negative lead.
10Insert the tools into the holes in the front
of the radio/cassette player and push them
until they snap into place. Pull the tools
outwards to release the unit (see illustration).
11Pull the unit forwards and disconnect the
wiring plugs and the aerial lead. Remove the
unit from the facia panel.
12To refit the radio/cassette player,
reconnect the wiring and the aerial lead, then
simply push the unit into its bracket until the
retaining lugs snap into place.
Each wiring diagram covers a particular
system of the appropriate vehicle; as
indicated in each caption. Carefully read the
Key to each diagram before commencing
work.
58Wiring diagrams - general
information
57Radio/cassette player -
removal and refitting
56Radio/cassette player power
amplifier - removal and
refitting
Body electrical system 13•21
13
57.10 Removing a radio/cassette player
using special tools - DIN fixing57.4 Radio/cassette player securing tangs
(arrowed) viewed from the rear of the unit -
standard fixing54.11 Loudspeaker/integral heated rear
window/radio aerial amplifier bracket
securing screws (arrowed) - Estate models