Thanks for the quick response. I used incorrect terminology, yes, measure voltage. Yes, there is a switch, a 5 amp breaker and the VR. There is voltage at the switch and the breaker and I assume at the VR since the gear driven alternator is charging, but I'll check for voltage at the VR also. I traced the field wire for possible breaks and didn't find any. Same question, assuming there is voltage at the switch, the breaker and at the VR, if there is no voltage at the field wire at the alternator, is this a VR issue? Anyone have experience with this?