I just received my ebay fog lights today. The box contained a wireing harness that goes to the switch w/ pigtailed ends and another harness with one pigtail, a round plug and a flat plug. What are they for? It looks like I can wire the fogs using the factory harness. Confused

 

no instructions?

are they the official SCION fog lights? or the cheaper ones? if they are the cheaper ones then the switch probably doesn't plug directly into the circuit for the factory fog lights *where the plugs are behind the bumper* so that's why they gave you the extra wire to run your own.. you can use a multimeter and try and find where the factory wires are and make your own connections there to activate the power to the plugs