[GT35065]

JHV48, I'm sure the wiring may be wrong on the ammeter as it goes to positive when the fans are turned on. In normal driving w/o fans it stays pretty close to the middle. More importantly, I've measured the actual voltage at the battery as stated and battery is charging fine until headlights and dual fans are on. The fans draw a fair amount. With just the headlights on I'm still in charge condition. It is when all stuff is on it goes into discharge (12.4).

lovehamr, that looks like a beastly alternator. Maybe that is the answer. I have an electric fuel pump as well, and the dual fans due seem to draw a bunch.