I'm trying to do this to my 04 XL. I found the connector for the fog lights on the frame rail. I bought an OEM fog light harness, a light switch with fog light capability, and fog light assemblies. When I put everything together, the fog lights won't turn on. I checked the wiring harness with a multi-meter, and there's no voltage coming through it with the light switch on fog light.
They way I wired up my fog lights when I had them, I took and ran a trigger wire from the parking lights. Ran the trigger to a relay, and wire up the relay to turn them on. Worked well for me.
Did you get this to work? Because on 99-00 trucks a fact switch (01 up) for foglights wont plug-in to that harness. Also 01 up the relay is hard wired into the main harness behind the glove box. My truck is a 00 and i have looked into this. I have all the stuff foglights, switch, mounts etc. It looked like I was goin to have to pull the pins out of my harness and change plugs and then iirc the yellow wire on the other switch sends current out when you pull it. And I was goin to go from there. But I would love to know an easier way.
I'm finding that I'm gonna install a push pull switch somewhere under the dash to a relay to the lights. I'm lazy!! Maybe just putting a lot of time converting from srw to dually right now so time is scarce.
I think wiring a trigger wire from the parking lights is the fastest and easiest way lol. Power wire from battery to a relay installed by the battery, trigger wire from parking light.
Then the fog lights will be on anytime the lights are on, correct? I want them seperate so if I don't need them they are not on. I'll need to try it and see.
Like I did, see previous post. A small push/pull switch and a relay.
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