'48 Loadmaster 1.5ton 6v, rebuilt motor, generator, distributer, and new wiring harness. Since installing the above items I have let it idle for awhile, and only made short 2-3 mile drives as I am still working on odds and ends. Today I noticed that at idle the ammeter is at center or barely pos or neg, depending if lights or heater blower are activated. However once I rev over 750-800rpm the ammeter pegs almost all the way to negative. Only returning when the idle drops back down below 750 or so. This occurs with the truck sitting in neutral and when driving.
Could this be a voltage regulator adjustment?
