[spldart]

I'm sorry but two of your tests are conflicting my diagnosis.
If you get 45 to 50 volts between stator out A and B but you get no volts on stator out
C to A or C to B then C is an open winding.
I'm arbitrarily assigning designations as they will all be one color and providing ac current flow.
Anywho. Under these circumstances there should be an obvious difference in ohmmeter
readings when measuring C to A or B.
A to B should be under 2 ohms since we get 45 to 50 volts.
Anywho...........
I'm leaning towards stator at this point.

Can you get a dmm with diode check on the rect/reg and see if you can find inconsistencies?
If you have a shorted diode in the rect/reg assy then it will make short work of any new or used stator.