General description of electric equipment

By car Volvo S40, as in all modern cars use electrical circuit with a voltage of 12 V, a voltage regulator of the generator. The circuit is made of a single-pole electrical system in which the body and the engine are used as the negative lead ("weight"). General characteristics of various electrical devices, refer to the table. 2.3, and the list of used lamps Fig. 2.48 and Table. 2.4.