New to me Mustang, my first. I seem to have a headlight issue. It seems that for some reason the high/low filaments in the 9007 bulb are operating in reverse. When I have my lows on both filaments are on and when I put on my high beams only the high beam filament is on. It is as if the wiring at the harness for low and high are backwards. I do not know if the previous owner rewired them at some point but it sure seems that way. Does anyone know the color code for the headlight wire harness the bulb attaches to? Thanks!