i have that orange with black stripe wire coming from a breaker on fire wall, runs to fuse panel. i have that wire plugged into battery fused spade in fuse panel. i have power windows on my 67. but there is a pink wire that comes from window harness that plugs into acc for power to windows. as far as getting a wire diagram, u can go online and find them or i think classic industries has manuals u can order also.
good luck with ur wiring, did a bunch this winter, it can get frustrating.