Where is fog lamp relay located on 98 gt mustang

Fuse 12--20 amp, under hood fuse block. Is there a two wire connector at fog lamp, if so, the black wire is ground and the other color is voltage, use a test light to check. I didn't check everything for fog lamp control, so if a switch, you may have to check that and wiring circuits.

Relay should be in the power distribution center under the hood.

There is also a relay ! FOG LP fuse # 11 10 amp location , under hood in the engine bay fuse / relay box . FOG LP relay #39 .

RR FOG LP relay #45 , RR FOG fuse #5 10 amp , location rear fuse box .
The fog lamp relays are computer controlled , by BCM

There are two relay's for the fog lamps in that relay box . fog lamp isolation an fog lamp relay . You can find a diagram here http://www.bbbind.com/free_tsb.html Enter your vehicle info. year , make , model , engine size . Under system click on electrical distribution , then under sub system click on relay . Hit the search button , then click on the link . Good luck !

Under the hood you'll find a relay center. In that box, you'll find the A/C relay. If you're A/C isn't coming on, this could be the problem. To test it, swap it out with a relay next to it and see if it comes on. If it does, replace the relay. If it doesn't still, look in the fuse box to see if you in fact have a blown A/C fuse. The fuse box itself is located under the dash.

Hello! Accidental short on the cigar lighter or a failure? If it was a failure has the cigar lighter socket been replaced and is OK? If the failure or accidental short on the cigar lighter happened when the fog lamps were on current back fed through the Fog Lamp Relay and may have damaged its contacts...Question then becomes; Is the fog lamp fuse (FOG LPS 15 A) OK...it is in the under hood fuse block..Have you checked the fog lps fuse? if it is good and fog lamps do not come on replace the Fog Lamp Relay (under hood fuse/relay block)
Guru...saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

either under the dash by or in the fuse box or under the hood in the other fuse box

Your fog lamp relay is stuck open you need to locate it and replace it.Usually located under the hood in engine compartment in the fuse relay cluster.Open the cover and on the diagram detailed and numbered you will see fog lamp relay remove and replace this relay is most likely a dealer item.

Check grounds wires and also there should be a fog lamp relay probably under the hood.

My guess is you have a corroded wire (that has shorted out the connection); known problem for this vehicle.