I had the same problem, but i got it now so that the fogs come on with the parking lights. This is what worked for me, easier then taking off your bumper
1: remove plastic housing for steering wheel column
2: unplug comb. switch harness and the other harness connected to it
3:using small screwdriver remove red/green wire pin on both sides of the harnesses
4:using small scredriver remove red wire that holds both harnesses (its the only one connected to the car after you unplug both harnesses)
5: just swap the wires (red/ green in the red wire ports, red wire in the green/red port)
6: reassemble everything, and dont forget to replace the interior light fuse 7.5 to 10
old post but figured someone would use...