Here is my answer, Headlight relay in English is headlight relay.
A headlight relay is an electronic control device commonly used to control the opening and closing of headlights or other loaded equipment. They usually consist of coils, contacts, and normally closed or normally open switches. When the coil is energized, a magnetic field is generated, which attracts the contact to close or open, thereby controlling the current of the load device.
In automobiles, headlight relays are usually located near the engine compartment or dashboard. It controls the opening and closing of headlights by sensing the state of the vehicle key or door lock. When the vehicle is started or unlocked, the headlight relay is powered to work, causing the headlight to come on. When the vehicle is turned off or locked, the headlight relay is powered off and the headlight is extinguished.
In short, the headlight relay is an important electronic component that enables the opening and closing of headlights or other load equipment by controlling the current break. In automobiles, headlight relays are usually located near the engine compartment or dashboard and control the opening and closing of headlights by sensing the status of the vehicle key or door lock.
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