SOMEWHERE (after several moves), I have some original techschool GM material, with a full description of how these alternators operate. I need to try to find it, as I know the "loss of voltage feedbac scenario" was discussed in detail.
With the original GM regulators, they will "default" to charging about a Volt higher than normal, if the sense lead is lost, APPARENTLY there's more components than shown in the simplified functional schematic diagram, and there's a second voltage feedback source, apparently from the terminal fed by the diode trio.
With the replacment regulators that are around today, from the "land of almost right", I'm sure they are not exact copies of the originals, and may act differently when Voltage Sense is lost.
I still haven't run into any 10SI's that will STOP charging altogether when the "sense" connection is lost, though.
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