AMP Gauge Question
My bus has an AMP Gauge on it as well as a Voltage gauge. About 5 days ago I took the bus for a 50 mile round-trip. On the 25 miles out, the AMP gauge went up to +150 (as high as it goes) and then worked it's way down to right over zero (where it should be) about 20 miles into the trip. On the 25-mile trip back (after sitting stopped for about an hour), the amp gauge sat at -150 (the lowest it can go) for the entire trip back. This same situation happened again today.
The voltage is staying at about 14.5 (which is normal). The bus is driving totally fine and everything is working. I have kept all the conversion related electrical features 100% independent of the actual bus electrical, so this wouldn't be a conversion related electrical problem.
I could just be a bad gauge and nothing to worry about. But obviously I'm worried about it or I wouldn't be posting about it. I'm about to take two 8-hour trips in it and definitely don't want it to break down along the way.
Does anyone have any thoughts? Is this something worthy of stressing about? Thanks!