make yoself a test lead with a light bulb wired in it - by connecting one side to ground and the other to individual pins - yu can check the lives![]()
did the image link come through?
Done
BTW - if you are replacing the standard radio with an MP3 unit you will probably need an ISO wiring adaptor harness. Then you don't need to worry about which wire is what - autoleads do one (and I have a diagram for that too).