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Transpo pdf explaining the operation of Ford PWM regulators
The 4 page pdf produced by WAI-Transpo explains the operation of the Pulse Width Modulated regulators located within the alternators on our 3's. Of note, the pdf states that certain of the Ford PWM regulators do not meet Ford spec.

The pdf explains the function of all the terminals and the apparent advantages of the PWM style over previous designs. Note that Ford calls their "engine computer" a PCM, (Power Control Module), whereas Land Rover, an ECM, (Engine Control Module).
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Filename
Regulator_for_Ford_6G_PCM_Controlled_Alternators_WAI_Transpo.pdf
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