Hello all.
This is in reference to a 1964.5 Mustang.
The GEN light is on with the car running.
I am now on my 4th voltage regulator since I started trouble shooting this. I guess it possible all of them were bad out of the box but...
Things I have done:
I am measuring 11.99V at the battery with the car running. It usually measures 14V+ when the generator is working.
Tried several new regulators.
I pulled the generator out and brought it to a local old-school starter/generator/alternator place and they told me it bench tested perfectly.
I bench tested it myself using the motoring method (connected the A and F terminals, grounded it, and then applied 12V to the AF jumper wire. It spins fast.
To polarize it, I have removed the Field wire from the regulator, and then "flashed it" to the battery terminal - got the expected spark. Reconnected field wire. I have actually done this several times now.
I have tested for continuity between the f pole on the gen and the f post on the VR. Same for the Armature wire. All tests 0.2 ohms. Ground is also good to everything too.
Still the generator, when in the car, and all hooked up, does nothing. I am measuring 0 volts at the A terminal and the F terminal when the car is running, whether I measure it at the regulator or the generator. No volts from the generator means no charging, and the GEN light stays on.
I am no expert here - but it just seems like the VR is not energizing the field properly. But these VR's are also $60 new these days, so I feel like after I have tried 4 of them, I am missing something, and really do not want to just go buy another one.
Any thought on anything I can try? I need an old school guy to help with this one...
Thanks!
-Zim