Fog lights not working, calling all electricians Options

[malcolm2]

OK, I know enough about elec. to test a few things so here is what I found once home from Okteenerfest.

Fog lights, driving lights, whatever you want to call them just quit working.

The pull knob lights up
I get 12v in the front trunk at the connection from the main harness. (that is with the connection separated) {with all wire connected, I get no reading}
Grounds have continuity there too.

I did not get 12 volts once I took the light apart, not the bulb holder, just the light was apart and I used an alligator clip to ground it. No volts.

If I remove the alligator clip from the hanging light in the picture below and put the red lead of the VM on the white/ylw wire at the bulb holder THEN the black lead of the VM to a bolt on the car..... I get 12 volts.

So with the bulb holder or the complete fixture assembled and grounded I get nothing.

What is going wrong here?

[messix]

do you have amp draw feature on you vom?

if you do set the leads in the proper config, disconnect the hot lead for the light, then connect the leads to the hot wire from the car and then the other to the hot lead of the light and observe to amp load, if there is no load check it at the splice in the trunk, still no load check fuse 10 on the fuse panel.

there is a relay behind the fuse panel and that might be faulty also where it will not supply a loaded circuit.

[malcolm2]

do you have amp draw feature on you vom?

if you do set the leads in the proper config, disconnect the hot lead for the light, then connect the leads to the hot wire from the car and then the other to the hot lead of the light and observe to amp load, if there is no load check it at the splice in the trunk, still no load check fuse 10 on the fuse panel.

there is a relay behind the fuse panel and that might be faulty also where it will not supply a loaded circuit.

I don't have AMP draw feature, but I can grab an AMP meter from my guys at work and check it out tomorrow.

You mentioned the relay, and it made me think. I have not upgraded the wiring so the fogs operate only when the headlights are LOW beam. The fogs shut off when you switch to HIGH beam. The relay is probably what does that, so it is acting like the beams are on high.

Driving to Okteenerfest on Saturday morning, it was dark enough for headlights and my HIGH indicator on the dash is not very bright. I think I had my high beams on all morning.

I will search to find which relay and if it is one of the standard ones, I have some spares.

BTW: fuse 10 is clean and tight.... another thing I did with this car is that I have upgraded the fuse box, so it is brand new, 6200 miles.