[rotorwrench]

Grounding the wire will check the wire but not the points in the governor switch. Unscrew the governor and pull it out so you can check the points on the bench. If they open and close and have continuity when closed then the governor switch is OK. The flyweights should be secure and move easily. The gear should be metal. The governor shaft is held in the gear by a spring ring. Gear lash may be visible from the speedo gear side. If it has the wrong gear then there would be a problem. These governors were used on a lot of different cars and some had different gears depending on the transmission they were set up for.