Brake System
Filters
Engine
Body
Suspension
Damping
Belt / Chain Drive
Ignition / Preheating
Engine Cooling System
Exhaust System
Steering
Comfort / Interior
Wheel Drive
Clutch
Sensors
Gaskets / Sealing Rings
Fuel System
Transmission
Electric System
Air Conditioning
Heating / Ventilation
Belt Pulleys / Gears
car-light-bulbs
Relays
Door lock block/hinge
Chassis system
A relay is an automatic control device whose output will change leaps and bounds when the input （electricity, magnetism, sound, light, and heat） reaches a certain value.
And automobile relays are relays used in automobiles. This type of relay has high switching load power, high shock resistance and vibration resistance. Most power supplies in automobiles use 12V, and most of the coil voltages are designed to be 12V. Because it is powered by a battery, the voltage is unstable;