If you replaced the cell, then the harness, and it acted the same, the electronics are suspect. You can have issues with the internals of those same as wiring.
I doubt you have it but if you can generate mV, you can set it up @ 100mV hard wired, and dig in.
I doubt you have it but if you can generate mV, you can set it up @ 100mV hard wired, and dig in.
