jimtesla... I had the dealer install the first set of lights because I thought wires needed to be run and I wasn't sure of the correct path to run them, after all I didn't want to tear apart a new car. But I was later told that the wiring was already there. Look under the passenger side rail and the wire should be there. The end of it should be a capped off plug. You should see it without removing anything... it's just kind of tucked in. Then you would have to put the switch in yourself. Just pull out the empty plastic piece where the CD changer would go and the other end of the wire should be there to plug the switch into. My second set of lights I just spliced into the original.