General information about electrical equipment (Mazda Capella GC)

Consumers are connected to the positive power source via a wire, and to the negative power source via the vehicle body (ground). This method reduces the number of wires and simplifies installation.

Figure 13.1. Location of the main elements of the electrical equipment and ignition system in the engine compartment of the car: 1 – battery; 2 – starter; 3 – generator; 4 – high-voltage wires; 5 – ignition distributor; 6 – ignition coil mounting bolt; 7 – spark plug

The electrical system consists of a battery, generator, starter, electrical consumers and electrical circuits (figure 13.1).

The lighting system includes headlights, taillights, fog lights, direction indicators, license plate lights and interior lights.

The battery is charged by a generator, which is driven by a belt from the crankshaft pulley.

The starter is a DC electric motor with mixed excitation and an electromagnetic traction relay. When starting, the traction relay engages the pinion gear with the flywheel ring gear before the starter receives power from the battery. After the engine starts, the freewheel clutch disconnects the starter armature from the flywheel ring gear.

It should be noted that when working with any electrical component of a vehicle, to prevent short circuits and burns, always disconnect the wire from the negative terminal of the battery.