player1up said

Could also be that the regulator is "seeing" less voltage than the alt is putting out. If there is too much resistance in the wires headed to the voltage regulator, the regulator will see 12v when the alt is putting out 14v.

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Dan, Correct me if I'm wrong, but if the regulator looses its ground or it's connection is marginal, the same thing happens. The ground is lost so there is nothing for the regulator to reference the input voltage signal to. Thus it does not regulate the alt, it lets it go wide open.

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