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:

    Handbrake cable - adjustment
    Note: Where fitted, the adjuster locking pin must be renewed on completion of adjustment. Conventional braking system (except P100 models) 1 The handbrake cable is normally self-adjusting in use ...

    Front direction indicator lamp unit - removal and refitting
    1 Disconnect the battery negative lead. Models up to 1987 Low specification 2 Push the lamp unit rearwards into the bumper until the plastic retaining tang is heard to click in the locked positio ...

    Engine valve clearance check (Every 12 000 miles (20 000 km) or 12 months)
    SOHC engines 1 The valve clearances must be checked with the engine cold. On carburettor models remove the air cleaner. 2 Disconnect the HT leads from the spark plugs and release them from the cl ...