What are the characteristics of automobile electrical system?

The characteristic of automobile electrical system is low voltage. Gasoline vehicles mostly use 12V diesel vehicles mostly use 24V, DC, which is mainly from the consideration of battery charging. One-wire system means that one wire is connected from the power supply equipment, and the other wire is replaced by the metal part of the car body or engine body. Single-wire system saves wires, makes lines simple and clear, and is convenient for installation and maintenance. The main contents of automobile electrical include automobile power supply system, automobile starting system, gasoline engine ignition system, light signal system, instrument and alarm system, automobile air conditioning system, inspection and maintenance of automobile electric window and wiper system, basic operation of automobile decoder and detection of sensors.