
Solutions for car headlights not working are: 1. Check if the fuse is blown: If all lights are on, it indicates a problem with the dimmer switch. If the high beam and low beam do not work when the wiring is connected, the fault lies between the dimmer switch and the headlights or between the dimmer switch and the low beam lights; 2. Check if the car light bulb is burned out: The reasons may include a faulty voltage regulator, excessive voltage, or a short circuit between the generator armature and the field coil; 3. Check if the brake light is working: The main reasons include a burned-out filament, poor grounding, a malfunctioning brake light switch, or a broken circuit in the wiring; 4. Check if the car tail light is working: The reasons may include a burned-out tail light filament or poor grounding of the tail light.


