Why does my headlight turn off?
Why does my headlight turn off? The problem you describe about the lights going off and on are usually caused by the headlight bulbs overloading the head light switch built in circuit breaker. I would recommend replacing the headlight bulbs with factory specified bulbs and then if problem continues then replace head light switch. Why are the headlights on my Ford F150 not turning off? If the headlights on your Ford F150 truck are not turning off, the headlight switch is the main culprit. The headlight switch allows you to turn on and off your low and high beam headlights...