So, my tank was empty and when I turned the key on you could see the gauge move. Now I have no movement out of the gas gauge, and there is at least half tank. I used test light and there is power to gauge. I even tried to reground it, that did not work. Tested the pink to the sending unit, it's fine. Tried to ground pink wire to make gauge move, nothing. So now what? Take out sending unit and move it, see if that works?