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Can You Adjust The Voltage On An Alternator? [Solved]
It is possible with a simple resistor voltage divider to externally adjust any alternator with a sense terminal to produce a higher voltage - no alternator modification is required. The circuit attached is designed to increase the alternator voltage to 14.5 volts.25 Oct 2015
$5 alternator voltage adjustment knob!
There’s a photograph with more details on the diy high output
Increasing charging voltage on car audio alternator
High output
Increase Car Alternator Voltage 12v, 13V, 14V, To 70V
How to