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:

    Ignition HT coil - testing, removal and refitting
    Note: Refer to the precautions given in Section 1 before proceeding. All except models with DIS ignition system Testing 1 Accurate checking of the coil output requires the use of special test eq ...

    Manifold Absolute Pressure (MAP) sensor - removal and refitting
    Removal 1 Disconnect the battery negative lead. 2 Disconnect the sensor wiring plug. Do not pull on the wiring. 3 Disconnect the vacuum hose from the sensor. 4 Remove the two securing screws and ...

    Engine/manual gearbox assembly - reconnection and refitting
    1.8 litre (R2A type) 1 Reverse the procedure described in Section 10, noting the following points. 2 Before attempting to reconnect the engine to the gearbox, check that the clutch friction disc ...