Itinerant1 wrote:
I don't know if this will help you but they discuss the calibration with a magnet.
http://www.classbforum.com/forums/f5/rv-monitor-panel-for-winnebago-era-2815.html
So according to one guy on there, the sender/float is for the tank gauge, and the idiot light monitor is all about wiring issues if any.
Mex seems to be saying the same thing for the neg side. Clean up pos and neg to get accuracy? On my tank gauge there is just one wire (red for pos) I suppose the gauge is grounded for the neg side on the tank itself to the MH frame to the monitor panel?