Perfect, that's what you should get for a Dual wire, floating / isolated field alternator.
Assuming the rest of the harness is usable you can rewire the field / voltage regulator cir.
Just run new wires per the sketch in post 4 from ignition side of ballast resister, to the voltage regulator to one of the field terminals, the other field terminal to the other pin on the voltage regulator per the layout in post 7.
The existing blue wire might be good to go, as pishta pointed out. Then just adding the green wire from field terminal to regulator will do ya.
