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Schematic for Ford IASF Regulator

Motor Vehicle Maintenance & Repair Asked by mcu on August 19, 2021

Where can I find the internal schematic for the common Ford external alternator regulator, the one with I A S F terminals? I believe these type regulators were very common in the ’80s.

And also the internal wiring diagram for the alternator that went along with it (model ??).

What would be a good vehicle make and model to give a parts counter guy when ordering one of these?

One Answer

Here is the 4 pin diagram, it has never changed over the years for external regulators.

A= Battery, to alt and battery.

I= Charging indicator on instrument cluster

F= Field (alt)

S= Stator (Alt)

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Answered by Moab on August 19, 2021

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