3 wire switch. My only issue is the power wire that comes off the switch. Its supposed to be wired to the low beams or parking lights etc. Im wondering if this will cause an issue. I was thinking about running it back out to the battery. The ebay link for the lights I bought was the cheapest and best lights I have found.
2013 Ruby Red Focus SE Hatch
2009 Vivid Red Mercury Mariner Premier
2003 Azure Blue Mustang Mach 1