One of the fog bulbs was burnt on my 98 so I took the assembly out, replaced the bulb and put it back in. Now neither of them work. When I get out of work I plan on checking the fuse ( the light on fog button works not sure if that makes a difference) but if its not that what should I check? Could there be a grounding issue on the one I removed that would affect them both? Thanks alot!

 

Check your grounds. I think the light on the switch is separate from the actual relay. Listen for the click and check voltage at the lights

 

Tested the voltage at the lights seems they are getting no power. (headlights were on, key at second position, fog switch on) I checked the fuse and it was fine. Like i said before i replaced the bulb on the passenger side fog the driver side was working. Any other ideas? Thanks

 

Can you hear the tick of the relay turning it on? Try removing the new bulb and see if the other comes back on.

Check all of this with the truck running and the doors closed. I thought my rear wiper broke in a snow storm last year. The washer worked great, but the wiper will only come on if the driver's door is closed.... just a thought.

 

I took the other bulb out the other one didn't come on. I can hear the relay click. I tested everything with the truck running and the doors closed. Has anyone had a problem like this? Any other ideas? I really appreciate the help.