I am new to the jeep family. Just got a 93 wrangler S. I replaced the fuel sending unit with the 20 gallon unit and a new fuel gauge because it was not working. I also took out the vent pipe in the tank. The fuel gauge is going to be on the full mark when I turn the ignition on and doesn’t move. If I unplug the connector at the tank in short out the wires blue to green it goes back to empty. Fuel gauge does not work when trying to drive. Just stays above full. What can I do to figure out the problem?