I'll try to explain it the best I can the red wire at your headlight bulb cut it from relay pin87 goes to the bulb pin 85 goes to the bcm Side of the wire you cut 85 to ground and 86 to parking light + I think it's gray at the plug at the head light you will need a test light to make sure yellow will be hot with the parking lights on don't use that 1 because it goes hot when shifted out of park