The electric equipment of the car is executed according to the single-wire scheme. The second wire are current-carrying parts of a body, the engine and other knots and devices ("weight"). Negative conclusions of power supplies (the storage battery and the generator) are connected to "weight" and consumers. Thus often connection with weight is carried out by a special wire.
To a part of consumers a food moves via the ignition switch (cars with petrol engines
) or the switch of devices and a starter (diesel cars). Passing the switch power-supply circuits of marker lights, plafonds of illumination of salon, illumination of a luggage compartment, the alarm system, a sound signal, hours, the lighter, a radio tape recorder, system of the centralized blocking of doors and electric motors of fans of system of cooling of the engine are connected.
Colors of isolation of wires on schemes in the real Management are designated by letters: the first letter designates color of the wire, the second — color of strips on a wire. Connection of wires is designated by a point. In the absence of connection the point on their crossing is not put. Colors of wires are specified in tab. 8.1.