I went to a pick and pull and bought the whole engine wire harness and took it apart and then took out the wires I needed to setup the fog lights. Ford put all the wires you need inside the cab, but you need the wire that goes from the fire wall to the fuse box and then to the lights, all in all you'll need the wires, fog lights, switch, fuse box relay. I think if you search the older posts I've posted a whole story on how I did this a couple years ago, anyways mine is setup the same way it would be from the factory