- Alternator: The alternator is responsible for generating electricity and recharging the battery. If the alternator is faulty or not generating enough power, it can cause the car lights to dim when the engine is turned on.
- Battery: If the battery is old, weak, or damaged, it may not be able to provide enough power for the car's electrical system, causing the lights to dim.
- Electrical connections: Loose or corroded electrical connections can also cause the lights to dim.
- Voltage regulator: The voltage regulator is responsible for controlling the voltage output of the alternator. If the voltage regulator is faulty, it can cause the alternator to overcharge or undercharge the battery, which can lead to the lights dimming.
- Faulty wiring: Faulty wiring in the car's electrical system can also cause the lights to dim.
Solution:
- Have the alternator, battery, and voltage regulator checked by a qualified mechanic.
- Clean or replace any loose or corroded electrical connections.
- Have any faulty wiring repaired or replaced.
