which truck is this in? what was/is the 'resistor' and where did you have it installed? "new" gauge as in aftermarket, rebuilt, or ...?
"ground wire to frame" from what? is the sending unit grounded [mount screw to cab]? is the gauge housing grounded to the dash? did you resistance check the sender function before installing it? did you check gauge/sender function with the sender outside the tank?
Bill
