Fog light add

[Young-SC-Owner]

Well, I have a 99.5 XLT
Didnt come with factory fogs, So i bought the fogs..harness, switch.

Was reading on here that there should have been a pigtail for it....nope.

Even ripped out the battery tray n junk to get under there for a better look. I know where I pulled off the harness from the donor truck...Cant seem to see one.


So am I correct in saying that they used a different body harness for fog lamp version trucks, VS non?

[PolarBear]

When I did the 05-07 front end on my 99 I added fog lights, which my truck didn't have from the factory. I had the whole front end of the truck apart and never seen any type of wiring or harness that could have been for factory fogs. I just ran the 2 wires from the fogs to a switch on the dash, and by doing it that way the fogs could be turned on regardless of the headlight switch position.

[Young-SC-Owner]

I agree with you. I also dont recall it when i did my 05-07 swap

[Zaairman]

My truck has an unused wiring harness behind the bumper, underneath the left front turn signal. But, I'm not sure what it was for, as I could never get power to it. So, what I did was run a power wire off my headlight switch from the running lights, to a a relay, to the fog lights. Power was pulled directly from the battery for the fogs. Whenever running lights are on, fogs are on. K originally planned on adding a switch to this existing set up, so that whenever the running lights were OFF, the fog lights were off also. But, then I came to realize that whenever I have my running lights on, I will always have my fog lights on.