C 1500 Truck 2WD V6-262 4.3L VIN Z (1992)
Voltage Regulator: Testing and Inspection
Regulator In Charging Circuit
1.
Connect a suitable voltmeter and fast charger to 12 volt battery.
2.
Connect regulator and test light, observing battery polarity. Test Light should be on.
3.
Turn on the fast charger and slowly increase charge rate. Observe the voltmeter and test light.
4.
Test light should go out at voltage regulator setting of 13.5-16.0 volts.
The test light is connected into the circuit exactly as the rotor is when the regulator is inside the alternator. The regulator shuts off the current to the
test light when the regulator setting is reached. This voltage will vary with changes in temperature.
