I have a 2000 f150xlt. Fog light were fine then randomly stopped working. I checked all relays and fuses and the are fine. I changed the bulbs and still doesn't work. I hear this is apopular problem with these trucks. Anyone know how to solve this problem. Is it possible to just wire the lights directly to a aux switch?

 

Have you thought of looking for a poor ground?
Good luck.

 

Have you checked you light selector? the one you have to pull it out to light up the fogs, when you do does the little orange light come on? I know a few people that this stopped working on their truck. And about the aux, yes it is entirely possible.