If it helps. I have a 2002 1.6lx that had no fogs. The wires were on the loom just taped to another wire. Drivers side they were taped to a wire near the aircon with insulating tape, passenger side they were taped up on another wire near the bumper possibly the airbag sensor?

I didnt even need to change the headlight switch, they just work on the same as the rear fog lights did. If you need the two stage where you want to be able to have just the rear, you would prob need the new switch.

Mine is one of the more basic models doesnt have electric mirrors and didnt have front fogs or mudflaps etc.

The wiring must be there. May just be taped in different places.

I have literally just walked in from doing it myself now, i signed up to help you guys seeing as i had come on here for advice before purchasing.