Topic: Generator/voltage regulator


bp1940    -- 05-08-2025 @ 6:17 PM
  When I purchased my 40 Tudor, I was told that it had been converted to 12v. I noticed in the photos it had a 6 volt battery. So I immediately knew that the seller knew less than me from the start.I’ve been driving it and the battery has 6.3 volts.I’ve worked at a GM dealer for close to 40 years. I hate dumb questions, but here I go. Does anyone know why the voltage regulator is wired like this? Is this maybe a powermaster alternator? Lastly I circled a wire that I believe went to the generator at one time. It is 6v positive ground. I’m trying to do most of the work my self. I started out as a body man and been in parts. Thanks for everyone’s knowledge. Trying to make this a safe and reliable driver.


40 Coupe    -- 05-10-2025 @ 5:21 AM
  Your generator may have been converted to an alternator from it's appearance. The wire not terminated may be for a temperature sender. 1940 Fords had just one electric temperature sender scr*w*d into the drivers side head just to the rear of the radiator hose.


bp1940    -- 05-10-2025 @ 8:01 AM
  Thank you very much!! Someone added a aftermarket temp gage under the dash also.


sq1954    -- 05-22-2025 @ 5:10 PM
  I don't know much about the generator to alternator conversion. Did they make them with a built-in regulator Like the Chevs? I know some of those kind only had one wire lead out of them. That may be why some of the wires are disconnected. I noticed the disconnected wires at the voltage regulator too.


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