- Dec 5, 2006
- Leucadia, CA
I roasted a battery with very little usage over a year and a half of use and it sat on a trickle charger while not in use. I figured I'd look for issue. Turns out I was getting inconsistent current from 13 to 15.8 volts at alternator and battery. I figured VR, replaced and same issue. I saw someone say if VR is wired with switched wires it would not work at all. This got me thinking that when I did power steering and moved alternator to passenger side of engine, maybe I swapped wires. After swapping wires yesterday I get a constant 12.7V at alternator and at battery. Does this seem correct? 1974 F.5 engine with 1977 45 amp alternator. Seems low but being an old vehicle I am thinking maybe stock alternator only puts out 12.7V not higher 13 or 14 like modern alternators. Thanks for any replies.