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Alternator Research

Discussion in 'Early Jeep Restoration and Research' started by truckee4x4, Jul 7, 2020.

  1. truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

    Does anyone with an OEM Late 1960s Jeep have A part / model number for the Motorola alternator that came on the Dauntless V6? I’m just doing some research on the OEM specs for the electrical system. Thanks.
     
  2. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    According to my FSM, v6 alternator:
    Motorola A12 NW 528 Negative Ground 35Amp
    External regulator is Motorola R-2-K-1 (transistor style)
     
    mike starck likes this.
  3. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    The optional alternator was a Motorola 55-amp model - here's a photo of the data plate:

    [​IMG]


    Also, the earlier V6 voltage regulator used with both the 35-amp and the 55-amp alternators was a Motorola TVR-12W14 mounted on the passenger side inner fender well:

    [​IMG]

    [​IMG]

    Sometime during the first half of the 1967 model year, the Motorola R2K1 superceded it. The location of the R2K1 voltage regulators seems to have varied somewhat, but it appears that most were placed on the firewall.
     
    Last edited: Jul 9, 2020
    FinoCJ and truckee4x4 like this.
  4. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Maury knows way more about the details on this kind of true restoration stiff than I...as he says, the mounting location may have moved around a bit, so FWIW, the R2K1 volt reg was mounted in the inner passenger fender on the 1970 I have (production date of 1/70). I might still have some pics from when I removed the VR and replaced the setup with a 10SI etc....
     
  5. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Yep, after the R2K1 was moved to the firewall, at some point it was moved back to the earlier VR location on the inner fender well. You really have to wonder what the Jeep engineers' rationale for doing this was. I'd heard that the reason the voltage regulator was moved to the firewall in the first place was to keep it further away from exposure to mud, rocks, dirt, etc - which seems to makes some sense, until you realize that they later moved it back to the inner fender well.

    An NOS example of the Motorola R2K1:

    [​IMG]


    Here's a photo of my brother-in-law Fred's '67 (manufactured in Nov. '66) engine compartment showing the R2K1 on the firewall, just behind the air cleaner:

    [​IMG]
     
    Last edited: Jul 9, 2020
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  6. bigbendhiker

    bigbendhiker Member

    Tell your brother in law that's one good looking engine compartment! Or if you did the restoration, hat's off to you! I'd almost be afraid to drive it for fear of getting it dirty.
     
  7. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Will do - he did the engine compartment himself, and it does indeed look great!
     
  8. Fred T

    Fred T New Member


    Thanks! It was a lot of work and a long wait, but I guess that what hobbies are for. I touched up some of the paint and repainted the air cleaner last night so it's actually looking even better now :). Not for long though, I drive it all the time.
     
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  9. truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

    X2 that is a beautiful job! What paint did you use on the air cleaner?
     
  10. .My 67 has the original 37 amp Motorola 12n37a.