Can you fix a headlight switch?
It's Easier To Replace The Headlight Switch
Unless you have tons of experience fixing headlight switches, it's much easier to replace it. Repairing a broken headlight switch is no simple task. via
How do you wire a GM headlight switch? (video)
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What is a dimmer switch on a car?
The dimmer switch is primarily used to switch between the high and low beam headlights, however in many vehicles it also controls the vehicle's interior lights as well. via
How does a GM headlight switch work?
On this type of system the switch receives a low-current, 12-volt power supply. When the parking lights, or headlights are turned on, the switch sends this power supply to the controlled side of the headlight relay. The relay turns on and power is sent to the headlights on a higher-current circuit. via
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Does a relay control headlights?
When you turn on your headlights, that switch activates a relay. That relay, in turn, actually provides the electrical connection between your headlight bulbs and the battery. via
What would cause headlights not to work?
Solution: If both headlights aren't working, it's unlikely that a bulb is at fault. The likely cause is a fuse, headlight relay, headlight switch, dimmer switch or a wiring fault. About the only cause that is an easy fix is a blown fuse. via