jtppalmer050390
Member
I have the nippondenso alternator and have been using it for 135 hours and it has worked perfect. Then all of a sudden my Dynon shows 11.8-12v when any draw is placed on the battery. I did some trouble shooting and determined the alternator was working but only putting out 12.1 volts. I took it to the auto parts store and they said it was working fine but I made hem replace it anyway since it had a lifetime warranty. I put the new alternator on the plane and it is doing the same thing!!!! Don't know what in the world could have caused this. The alternator wiring is simple. Two wires used. One to the B lead and one wire to the switched live post. Any advice would be helpful.