Re: Please explain wiring for 3 pin alternator / regulator
White is voltage sense from the VR, 12 volts, key on.
Brown is the other side of GEN light, >1 volt with key on, engine off. If alt is working, 12 volts to turn off GEN light.
Dark blue is field voltage for alternator, full field, ie, 12 volts, will produce amperage level stamped on alt case, otherwise, lower voltage proportionate to load and rpm.
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