Gerald,
You will find having the meters to watch amperage is a great troubleshooting tool. Over time I see the amp meter increase a bit telling me it's time to clean the track.
But I had a case where I was running a Williams diesel with 2 motors. Was running fine but I happened to look and see the amp meter showing it at 6+ amps ( nothing but engine on the track).
Took the shell off and found 1 of the motors was super hot. The only thing I found was a wire that was punched to the point of exposing the wire a bit to the frame. Taped it up and carefully put the shell back on. It been running fine now for almost 2 years after the incident. The point is had I not seen the amp meter reading who knows what damage the engine motor would have incurred along with the added expense to replace the motor and such.
Ed
