Factory ammeter
On the car it's pretty easy. Procedure is in the shop manual.
Charge the battery fully.
Place positve probe or clip of the voltmeter onto the ignition circuit some place close to the regulator. The 'run' terminal at the ballast resistor is a good location.
Connect the negative probe to a good ground.
Start the car. Watch the voltmeter and keep an eye on the ammeter and rpms.
manual says target 1250.
With nothing else turned on and the battery charging done, voltage should stay pretty steady regardless of rpm.
That still leaves the possibility of resistance in the wiring, but the regulator itself is working.
Off the car you need a special tester that is powered. So the short answer is, off the car, no.
On the car it's pretty easy. Procedure is in the shop manual.
Charge the battery fully.
Place positve probe or clip of the voltmeter onto the ignition circuit some place close to the regulator. The 'run' terminal at the ballast resistor is a good location.
Connect the negative probe to a good ground.
Start the car. Watch the voltmeter and keep an eye on the ammeter and rpms.
manual says target 1250.
With nothing else turned on and the battery charging done, voltage should stay pretty steady regardless of rpm.
That still leaves the possibility of resistance in the wiring, but the regulator itself is working.