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How can you tell if an alternator has a built in voltage regulator?

Discussion in 'The Garage' started by afroman006, Jun 18, 2004.

  1. afroman006

    afroman006 1/2 ton status

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    I'm working on a alternator powered generator and need to know how to tell? The one I want to use came out of an 80 Chevy with a 292 I6. Its a small case. Anyone know? Thx
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    I think GM got away from external voltage regulators in the 60's or early 70's at the latest.
     
  3. diesel4me

    diesel4me 1 ton status Premium Member

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    Yes--1972 I think was the year that GM went to the integral regulator.Keep us posted on the generator--I'm interested in building one myself. /forums/images/graemlins/grin.gif
     
  4. lason

    lason 1/2 ton status

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    On GM alternators you have a stud and nut on the back which is where the power is and then there is a little plug. The plug is the internal voltage regulator. If you need one with out it then start looking at 60's vehicles.
     
  5. R72K5

    R72K5 Banned

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    yes 72 was the last year of the externally regulated charging systems, 73-up GM chevy olds buick caddy pontiac etc are all internally regulated "one wire" system

    good luck
     

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