Ok So my 2013 Rav4 did not come with fog lights. I bought a set off Ebay. Went to install them and saw that there is factory wiring. I plugged them in, bought a factory relay and installed it. But I can't find where to hook up the switches wiring to the vehicle. I'm trying to not have to use the aftermarket harness. The switch has a red wire, white wire, and a black wire. I think the red wire is 2 red wires spliced together. Can someone explain where to hook up those 3 wires please? I'm sure the black wire is ground.