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:

    Radiator fan - removal and refitting
    All models except RS Turbo Removal 1 Disconnect the battery negative terminal. 2 Disconnect the wiring plug at the fan motor and unclip the wiring from the shroud. 3 On pre-1986 models the fan sh ...

    Idle speed and mixture adjustment (Every 6000 miles or 6 months)
    Caution: Certain adjustment points in the fuel system are protected by “tamperproof” caps, plugs or seals. In some EEC countries (though not yet in the UK) it is an offence to drive a vehicle wit ...

    Exhaust manifold - removal and refitting
    Removal 1 Disconnect the battery negative lead. 2 Remove the air cleaner and pull the hot air pick-up pipe from the exhaust manifold hot air shroud. 3 Remove the securing screws (1 screw on DOHC ...