purchased my first jeep, 05 sport, this past summer. came with factory fogs but they hadn't worked since i got it.
read here all the different threads and concluded the Multifunction switch (MFS) need to be replaced.
i replaced the MFS but it didn't solve the problem.
i tried replacing the fog light relay and that didn't help either.
i took the left fog light apart to test for voltage and suddenly the right light started working. then it stopped working. then it started working again.
put the left one back together and had 2 working fogs. as i closed up everything they stopped working again.
i had noticed during the replacement of the MFS that the wiring harness was cracked and brittle. i had actually blown the MFS fuse when reconnecting the harness to the switch (twice since i put the old one back when the new one didn't fix it). i'm now wondering if there is a short in the wiring harness. I found a thread on another board
about this and a part number 05183442AA for a repair.
has anyone here run into a similar situation? i can't find the part online but will try visiting a local dealer this week to see if they can get it (reported to be $40 item).