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GM PCM controlled F type regulator
Posted to the Waveform Library on 7/29/2001

PCM supplies voltage (normally 5v) to the "L" terminal to turn on the regulator. The "F" terminal will send a 10v, 400hz duty cycled signal to the PCM as an input to the PCM for the mechanical load that the alternator is putting on the engine. This signal is b...