I have a 3-wire Bosch alternator on my 617 that's going into the S-10. It uses a push-on plug with all three wires contained in the plug. Two of the wires are pretty big gauge (like 12ga in US sizes) and terminate in a single loop connector in the OEM wiring harness (which I saved from the 300SD). Pretty sure that they just go to the battery, which I'll accomplish by hooking to the starter B+ stud.

My question is what to do with the little green wire. I think it gets switched 12V with either an idiot light or a 10 ohm resistor in that loop. Am I right on this one?

Dan