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Customs Is this GM Alternator Internally Regulated?

Discussion in 'The Hokey Ass Message Board' started by LittleBritishCar, Apr 5, 2014.

  1. LittleBritishCar
    Joined: Apr 22, 2012
    Posts: 90

    LittleBritishCar
    Member
    from Napa, CA

    I am trying to use this GM alternator in my '50 pickup build but don't know if I need an external regulator or if it is internally regulated. Any help would be greatly appreciated.

    [​IMG]
     
  2. henry29
    Joined: Sep 5, 2007
    Posts: 2,835

    henry29
    Member

    Internally regulated
     
  3. LittleBritishCar
    Joined: Apr 22, 2012
    Posts: 90

    LittleBritishCar
    Member
    from Napa, CA

    Thanks, that is good news!
     
  4. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,248

    Rusty O'Toole
    Member

    If it was external there would be a spot to plug in the regulator wiring harness. Not very likely you would see one, they went to internal regulators in the early seventies.
     
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  5. - - terminals are internally regulated, l l terminals are externally regulated.

    The first commonly available internally regulated alternator was used on some 1969 Pontiacs as far as I know.
     

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