Okay, so I have a 90 GTU, came originally with fogs. The previous owner swapped in an 87 TII engine, and I believe, all new wiring harness, even the chassis harness. SO...I am left with two fog lights and nothing to plug them into. I was wondering, can i rig up my own switch, or back to the original, and make it run off of a different source. Any ideas welcome!

Thanks,
Ben

 

here's how i did my 88 gtu when i put the s5 front bumper with fogs. i used the stock fog light switch and a regular 40 amp relay. each fog light has 2 wires, 1 for power and 1 for ground, so you can splice the 2 grounds together (doesn't matter which wire you use per fog light) and leave the other 2 for power, these go to the relay. also need a fused wire from the battery to the relay and a ground for the relay ( i used the same ground for the relay as the fog lights). the one slot left on the relay is for the stock switch so run a wire from the stock switch to the relay and the other wire left on the stock switch need to get power from somewhere to trigger the relay ON. i got power from the side mirror control in the console since it's right there. just check to see which wire gets 12 volts with the ignition ON and splice that wire to the wire from the fog light switch. hope i didn't confuse you.

 

Okay- I think I caught all of that, thank you!
-Ben