My driver side fog light is not working but my passenger side is. I check the bulb first, well the connectors are corroded badly and the blade from the bulb breaks off in the wiring harness connector and I can't get it out. So I cut it off and put some spade connectors. I then try a new bulb, nothing, still doesn't work. Now I get the voltmeter out and check the volts at the wiring harness. It's reading a measly 0.15, it will go up and down a little but doesn't get much higher than that. Which isn't even a volt. I don't think the problem would be a fuse or relay since the passenger side is working but I checked the fuse and it's ok. I can't check the relay because my voltmeter doesn't do continuity and I don't know any other way how to. Any help with this would be great and greatly appreciated. The only other thing I can think to check is the ground. Would each fog light have its own ground?

Its a 2004 new body style.

 

The fogs will be wired in parallel. You'll need to trace the wire back to the common splice and see if there is a fault in that section of the circuit.

 

Thanks. I'll try and find some time to do that.