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  1. Isuzu 4BD1T/2T
    We're finishing the installation of a NOS 4bd1 (ass'y 12/'79) into '74 GMC 4x4. The last wiring hookup is to the alternator/external voltage regulator. I haven't been able to find a diagram in any of my manuals or search in the forum. The regulator that came with the re-power unit does not...
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