I don't have one but have installed Fog lights before. For the most part, you will need to trigger the relay from parking lights or similar. The switch will need to be routed to te dashboard thru firewall. There could be stock wiring hook up also if I'm not mistake.Revive as I'm looking to add these as well. Is there a wiring diagram on this board anywhere b/c the guy I talked to said it has no directions at all.