Mine has it in the right hand reverse light... from the looks of it there's a wire goes to from the switch to the light... a wire which I assume goes from the switch to the headlights live (so the fog only works with them) and a earth/ground for the illumination in the switch??
That's just my wild guess from what mine looks like... I'm no electrical genius!
That's just my wild guess from what mine looks like... I'm no electrical genius!