How To Test A Voltage Regulator. Testing an alternator regulator with your multimeter set to Ohm or Amp can damage your device. Testing the voltage regulator on a lawnmower.

Without a regulator the battery would receive upwards of 30-volts of power while charging which would quickly damage or destroy your battery. Unplug the Two-Wire Connections from the Alternator. Even a small engine voltage regulator can stop your lawnmower from turning on.
The alternator and voltage regulator make up the charging system of your vehicle.
The main issue that arises pointing out a problem in the voltage regulator is when the battery starts to drain out completely. Follow these steps to test your voltage regulator. The best way to test a voltage regulator is with a multimeter and what you do is you put your multimeter clamps directly on the battery terminals. Seemed easier at that point just to.
