Lighting and light signal device circuit is a circuit composed of headlights, fog lights, position marker lights, turn signals, brake lights, reversing lights, interior lights and related control relays and switches.
The instrument information system circuit is a circuit composed of instruments and their sensors, various alarm indicators and controllers.
The auxiliary device circuit is a circuit composed of various electrical devices designed to improve vehicle safety, comfort, etc. The types of auxiliary electrical devices vary with different models. The higher the grade of the car, the more perfect the auxiliary electrical devices. Generally, it includes windshield wiper and cleaning device, windshield defrosting (anti-fog) device, air conditioning device, audio device, etc. More advanced models are also equipped with electric window lifting devices, electric door locks, electric seat adjustment devices and electric remote control rearview mirrors, etc. Electronically controlled airbags are included in the Electronic Control System.