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  1. #1
    Join Date
    Mar 2007

    Default converting an external regulator to a internal

    Does anyone have a diagram of how to wire a 1971 gs 455 from an external regulator to an alternator with a internal one? I have instructions but without seeing a drawing I am easily confused. The alternator was on the car and the regulator is gone off the firewall. I assume its an internal one, is there an easy way to find out?

  2. #2
    Join Date
    Feb 2002
    Oakland Gardens, N.Y.

    Default Re: converting an external regulator to a internal

    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    1967 BT Switchpitch ST-400, Gear Vendors OD
    with TSP 3200/1800 converter
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's
    11.67 @ 115.49 MPH
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  3. #3
    Join Date
    Mar 2007

    Default Re: converting an external regulator to a internal

    Thats the instructions I currently have but I am stuck on number 3 of the installation. Is there two red wires attached to the rear Bat ring post and is one of them going to the battery?

  4. #4
    Join Date
    May 2002
    the Seasonally Frozen Wastelands

    Default Re: converting an external regulator to a internal

    This isn't hard. You need to change the molded plastic connector that plugs into the alternator (about $6 from NAPA or any other real parts store); and install two homemade jumper wires into the plastic connector that USED to plug into the external voltage regulator.

    The older external-regulator alternator has the connector blades for the indicator and field connections on the rear, and they are side-by-side like this: II instead of side-by side "inline" like the internal-regulator alternator: _ _



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