Thanks, Jeff. Now my dumb question: why not run the power from the coil? btw I just rewired the power to the empty side and I get the 1/4 full reading which I know to be inaccurate as the tank is near full. I do have the sender wire to the center post on the sending unit and the unit is grounded to a screw going into the cab just above the tank (tank is behind seat). Could that not be a good ground?
