Chek fuses and relays, check for a burnt harness and check the dimmer switch, if it's floor mounted unplug it and see if the headlights come on, if they do replace the switch.
January, 25, 2012 AT 8:26 PM
Check the voltage at the breaker for the headlights in fuse panel. Turn the lights on and check the voltage at the headlight bulb connecter. You can use a test light to do this simple testing. This is where u should start before pulling the swicth.