It looks like the op-amp that measures the shunt had some components replaced around it with a tacked on capacitor and spade lug to ground. Someone added a third wire to the shunt also. Does anyone know if this could have been a factory mod that isn't documented? --Not sure why anyone would do this. The foot pedal in remote works fine also (0 current to max current fully depressed, no matter the dial setting).
Any help would be appreciated. Thanks.