General information and precautions
The body electrical system consists of all lights, wash/wipe equipment, interior electrical equipment, and associated switches and wiring.
The electrical system is of the 12 volt negative earth type. Power to the system is provided by a 12-volt battery, which is charged by the alternator (see Chapter 5).
The engine electrical system (battery, alternator, starter motor, ignition system) is covered separately in Chapter 5.
Precautions
Warning: Before carrying out any
work on the electrical system,
read through the precautions
given in “Safety first!” at the
beginning of this manual, and in Chapter 5.
Prior to working on any component in the electrical system, the battery negative lead should first be disconnected, to prevent the possibility of electrical short circuits and/or fires.
See also:
Heated rear window aerial amplifier - removal and refitting
Removal
1 On some 1986 models onwards the radio
aerial is incorporated in the heated rear
window element, and to assist reception an
amplifier is fitted. This is located in the tailgate
adjacent ...
Ford Sierra Service Manual
...
Spark plug renewal (Every 12 000 miles (20 000 km) or 12 months)
1 The correct functioning of the spark plugs is
vital for the correct running and efficiency of
the engine. It is essential that the plugs fitted
are appropriate for the engine.
2 Make sure that t ...
