So...still a mystery as to the black with single orange stripe wire! With it unhooked does everyting work on your car? Those of you that have 68 AC cars...regarding the other heavier #12 black wire with two orange stripes...it's the one with the 30 amp fuse line. Does your wire go to the horn relay battery terminal or the alternator hot post? Also, where in that line is the fuse connector located? Someone asked about my car. I'm just completing a frame off resoration. The car was previously an old lady's car from Stockton, CA...completely untouched. It a 400, auto, air, PS, PB, ralley IIS, mayfair maze with black vinyl top car. All numbers matching.