Posted 12/10/2025 17:20 (#11464892 - in reply to #11464800) Subject: RE: Alternator exciter wire on Gleaner A75
Wisconsin
Haven't measured one, but that sounds normal to me for a diode and resister voltage drop, and the 10V is consistent while the 12-14volts is jumping around. For testing you could jump the exciter direct from the B+ terminal on the alternator, if you get 12V then, the alternator is bad.