Diagnosing high voltage

That was from battery positive to those two locations. And I made a mistake. The readings were 0.20 and 0.26.
AH OK then I'd say VR drop is good. Next, make sure the green brush connection is not grounded. Remove both field wires, check one or other brush/ field to ground for resistance, they should be OPEN / infinity. If they are, make sure VR is grounded, and if so, replace VR