2008 xB. The driver's side low beam headlight went out and after replacing the bulb, it was working again. I went back out later that day and it was out again. Through switching the bulbs around, I found out the bulb was never out. The driver's side low beam is not working because of some other issue. I switched the fuses around as well and the problem persisted. So as far as I can tell, its not the fuses and its not the bulbs. Does anyone know what the problem may be and/or what I can do to fix it?