I just bought an exhaust tip with leds which needs to be wired up to the brake lights on my mazda 626. Can somebody tell me which colour wire it is (positive) on the wiring to the brake light? There are a few wires and I dont know which one it is! Thanx
Its either red or green,sometimes white if there is a black ground wire.
get a 12 volt test light to find power and just ground it to the vehicles chassis if your not sure about the ground
How do you wire this up? You dont !! Beautifying your car is good to do but I have seen these LED tips and they look terrible. If you want your car to look like a cheap honda civic thats been dressed up, then go ahead and do this. if you still want to do this, use a multimeter across the two cables. run one lead to each wire. If you get a positive voltage when someone else presses the brake then the positive lead you have connected will be the side that is positive. If your voltage is negative, then the wire NOT connected to the positive lead is the positive
