72 panther with a 292 single electrical question
I have an old 72 panther with a 292 single. I'm trying to make sense of the electrical system (some bonehead pulled it all apart - cut wires, no battery.) Out of the motor, it has got two yellow wires and a black wire sticking out (it's an electric start) I read around 10 volts ac coming from each of the yellow wires at idle. From my wiring diagram I understand these wires go to a voltage regulator, which I misplaced somewhere (great) and I will have to re-purchase. Any suggestions there? I am thinking a generic electric start voltage regulator if I can get away with it, although it seems the one that came with the sled had a (25 amp?) fuse, I suppose I could wire in a 25-30 amp fuse right? Anyway, the black wire is supposed to be grounded and there's a green wire that grounds the regulator and a yellow/black wire that goes to the b terminal on the ignition switch and another yellow/black wire that links to the positive battery post. So... The black wire which is supposed to be grounded bonehead linked up to a switch which when thrown kills the engine - the switch grounds the wire (and coil I assume.) I checked this, with the wire just hanging out motor not touching anything, the darn thing runs but ground that thing? Yep, it sparks and the motor quits. That can't be normal right? Or is it. Do I need to ground this wire to hook up a battery, voltage regulator and lights. Does the lighting coils somehow integrate and allow for running and normal shut off? What's going on?