In Reply to: Re: EARLY 9N VOLTAGE REGULATOR -REPOP posted by 36 coupe on June 18, 2018 at 19:46:14:
Well, according to my data, you are partially correct. I show the round-can cutout being used thru 1938 on some vehicles with the oval VR being used on others up thru 1937 and then the square voltage regulators effective, December, 1937. The squares were used on the '38 Ford DeLuxe model car in 1938, probably a few other vehicles as well. I have been to so many car shows searching for an original that I can observe up close but every vehicle I come across ha had a 12-volt switch over job performed and thus no VR in the circuit. The '38 and '39 VR were basically the same, so I don't why the seller says "for police vehicles with radios' or whatever. They were the same unit pretty much inside and out. The guy manages to sell these so whatever a restorer is willing to pay is the key.