What happens when you turn off the headlight?
What happens when you turn off the headlight? However, as the bulb ages, it may shut off (drop its arc) more often. That can happen as many as 30 times per minute. When that occurs, the ballast tends to overheat. To protect itself, the ballast itself will shut down. It will not reset itself. The ballast can only be reset by turning the headlight switch off and then on again. What to do if your headlight bulb is not working? Before you write off your headlight bulb as bad, it’s important to look at the electrical connector for any signs...