well, after extensive digging in my car, i found the original alt plug that came out of the chevy with the alt i have, it seems to match the schematics for an 87...has one large wire, like 10ga, for the regulator connection(it calls the color of the wire 'rust', its kinda like an off-yellow color) and the thin brown wire is the field wire, so i think the markings on the alt i have are correct. ill find out once i get the new timing cover from engnbldr and get this motor back in the truck. thanks much for the schematics!

'94 X-Cab, EB inside and a few fabbed parts. My wife: "How about you stay on the road?" Me: "I drive a Toyota truck, the road is OPTIONAL!"