Get a good digital volt meter.Set the meter to DC volts at the 20 V range. Start and run the unit at 1500 RPM. Use the probes of the DVM on the battery posts. 13.6 to 14.0 Volts indicates the regulator operating. If lower suspect that the battery is low on charge, the alternator belt is loose or there is a bad diode in the alternator. If the voltage is higher than 14.0 V assume the regulator is bad and needs to be replaced. To check for bad diodes set the meter to AC Volts at the lowest range available (5V should do). Probe the battery, an AC reading greater than about 150-200 milli-Volts indicates a shorted diode. To test the regulation further run accessories (headlights etc.) to make sure the alternator maintains 13.2 Volts or greater. Lower voltage under load can point to a problem with the regulator or alternator.
Inside the alternator.
On back of the alternator..
It's an internal regulator held in place by 2 screws on the back of the alternator.
Inside the alternator.
Unplug the electrical connection and remove the two bolts holding it. Reverse order to install.
it will be a silver box 3 to 4 inches square with a wide flat plug either bolted to the firewall or one of the fenders
What question
They might have a different internal voltage regulator that is used.The idiot light in some systems acts as a resistance that makes the regulator to charge.try putting a small automotive bulb in series with regulator connection at the alternator and see if your gague reads any voltage then.Check a motor manual to define the correct connection post.
I believe it is built into the altenator.
window regulator cable is broken need new regulator
need wiring diagram alternator and regulator ford 1978 f150
Low battery voltage .?