[jpgmtech]

Originally Posted by Randy

Nah, that would increase the output, not decrease it. There is a voltage sensor wire on the alternator (most of the time separate from the dash light wire). The main output will go as high as it needs to to maintain voltage on that wire. To decrease the output, you need to increase the voltage on that wire, but it would be unstable if you didn't have it related to the output voltage. Maybe connect a AA battery to it? The current should be quite low.

Think impedance...