BOY is that a tough question
keeping it stock means a 12 volt harness may not work as well as one for 6v. wire resistance is a factor w/ 6v systems
what do you need and truely answer what it is you want from your bolt or will do to her is the question. then look for the system that fits.
is this a driver? stock? I've made my own harness, have 8 relays as well, all soldered, labeled and heat shrinked. mine is a 51 but a harness works w/ all years. the wires don't care... only you do.
TOM R, if you want a basic modern wiring diagram i can mail a copy to you. you can them ask more questions, learn, add, or subtract from that.
it's a start.
