Scotty, Ima thinkin you pretty much have it, heres my input:
1) A Full Fledged Voltage Regulator may be EITHER 3 terminal (BAT ARM FLD) OR 4 terminal (BAT ARM FLD LOAD) The difference is if its only a 3 terminal VR loads get voltage off the ammeter but if its the 4 terminal VR with the LOAD terminal, loads are fed from there instead.
2) The Cutout Relay is usually ONLY 2 terminals BAT and GEN/ARM buttttttttttt some IHC Cutout Relays also have that extra F terminal AS YOU SAY WHICH I BELIEVE (Jim and Bob M can confirm or correct me if Im wrong)
3) YES, the gennys Field needs a ground return path in order for field current to flow to create the magnetic field so if theres no VR to do that, its gets its ground (dead for High charge, resistive for Low charge) via the LHBD light switch.
4) Soooooooooooo if you dont wanna use the LHBD switch Ima thinkin the F terminal on those 3 terminal cutout relays can indeed provide a field ground buttttttttt its always at the high charge (dead ground) rate.
Im going to give him a few troubleshooting tips up above
NO WARRANTY I dont have much experience on the older IHC cutout relays mind you, ESPECIALY ones with the F terminal??????????????
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