[sam89]

Is the wiring for the fog lights on a gt also there in a lx? If so could I just get a GT switch and wire in a set of aftermarket lights to the underhood wiring for gt lights?

I just don't like the idea of putting an unnecessary switch inside my car

[97gtstang]

I may be wrong but I don't believe the wiring is there. I need to look into this as well because I'd like to install some fogs in the gt bumper I've got on my 4. I simply planned to buy the switch,factory plugs and splice wire in between.

[sam89]

Man that shoots down the easy factor haha. I'll take a look and see if i find anything tucked away anywhere, although I'm not sure what im looking for. whats the plug look like

[97gtstang]

In the dash I think it's a two wire plug that would have connected to the factory switch. Under the hood I'm not sure, I was replacing my o2 today and didn't see any fog wires and I remember when I did the bumper swap I didn't see anything then either. Someone else should chime in about this here in a little bit. shouldn't be too hard to do yourself though. Just search this on eBay

87-93 Ford Mustang GT w/Foglights Headlight Headlamp Switch w/Plugs & Wiring

And pair it with your own fogs/wiring kit. What fogs are you going to use?

[sam89]

Im not sure, my headlights are complete junk and I just want to throw something else on to help me see more than 10 feet. Any cheap, good reccomendations

[97gtstang]

Polish the lenses. That's prob the cheapest thing. I drive everywhere with my brights on cause mine are so bad.

[sam89]

ive cleaned my lenses like 3 different times and it still does nothing. Plus with my brights on the lights are even worse

[97gtstang]

short of going this route im not sure what else would be simple and safe.

REPRODUCTION HEADLIGHT HOUSING DRIVER SIDE 1987-1993 | CJ Pony Parts

Might be able to find someone that has upgraded their headlights and still has their old ones, they might make a deal/send em free. Id give you mine but sounds like they are about the same condition.

[sam89]

I just need to bite the bullet and get some aftermarket lights. Did we ever figure out this foglight thing though haha

[Cgross609]

If you want some decent aftermarket lights, and you live anywhere near a John deere store, you can grab a set of HID bolt on lights with internal ballasts for around 60 bucks or so a pop. They're shock and impact proof and guaranteed for around 7500 hours i believe. As well, the replacement bulbs for them are only about 13 dollars a piece, instead of some other HID replacement bulbs which can run into the hundreds.

[97gtstang]

I stand corrected Sam. I pulled my headlight switch out to change some cluster bulbs that were burned out. Behind the switch there was an orange and a blue wire connected to the empty fog light switch. After looking at some wiring diagrams these look to be correct for the factory. I do not know where they come out upfront though I'll have to trace the wires. We both may be in luck for getting fogs installed easily.

[4themasses]

With the SVO crowd they usually bypass the headlamp switch due to heat issues and connect to a relay under the hood. Check SVOCA for details on this....

The basic mod: operating the fog lights through a relay:
Parts needed: A 30 amp fog light relay (about $4 at any parts store), a relay socket or 4 female spade connectors to mate up with the relay terminals, a fuse holder and a 30 A fuse, several feet of 10 gauge and several feet of 14 gauge automotive wire.
I suggest all connections be soldered, but I suppose some splice connectors would work. The wire color codes listed are for the 87-88, but MIGHT be the same for 83-86, bit I am not sure.
Locate a place to mount the relay, and mount it. I mounted mine to the top of the core support near the battery using a small metal “L” bracket. Crawl under the front of the car and locate the harness going to the fog lights. Locate a part of the harness before it splits off to each fog light, and extract several inches of the Tan / Orange wire from the harness. Cut this wire. Attach a piece of 10 ga wire to the Tan / Orange wire GOING TO THE FOG LIGHTS, and run this wire to one of the two relay contacts. Run another piece of 10 ga wire from the battery terminal of the starter solenoid to a fuse holder, and from the fuse holder to the other relay contact terminal. The fuse should be located as close to the starter solenoid as possible. TRYING TO GET BY WITHOUT USING A FUSE IS ASKING FOR TROUBLE! Run a piece of 14 ga wire from the other Tan / Orange wire (coming from the harness going toward the rear of the car) to one of the relay coil terminals. Run another piece of 14 ga wire from the other relay coil terminal to a good ground. I used the same screw that mounts the relay to the core support for a ground.
Having the fog lights turn on automatically whenever the high beams are switched on:
Parts needed: the only additional parts needed are two small 1 amp rectifier diodes, 1N4003, 1N4005, 1N4007, etc, available at Radio shack, and some more 14 gauge wire.
Only a small amount of additional wiring is needed to make the fog lights come on with the high beams. Put one of the diodes in the Tan / Orange wire going to the relay coil. This diode lets current from the fog light switch flow to the relay, but blocks any current from the high beams from flowing back to the light switch. Find the Light Green / Black high beam power feed wire going to the driver side headlight, and tap into it with a length of 14 ga wire. Run this wire to another diode, and run the other side of the diode to the relay coil terminal that the Tan / Orange fog light wire goes to. This diode will pass current to the relay whenever the high beams are turned on, thus turning on the fog lights, but will block the fog light current from turning on the high beams. BE SURE TO CONNECT THE DIODES WITH THE CORRECT POLARITIES, OR NOTHING WILL WORK CORRECTLY!!!