I knew the sender was wonky, got a little bent putting it in years ago so when it was full it would read well past and bounce a bit but it settle down to an accurate reading at around 3/4 of a tank. Wired in a USB charging port for my phone when I added my console and now the gauge is pegged past full. Checked the OHM resistance at tank and it is 68 which should be about right, 2/3 of a tank. I checked the resistance at the gauge and it is exactly the same. Tried grounding gauge and it doesn't go to zero so I think it is pooched, My question is when I checked the resistance at the gauge the pink wire has the 68 ohms but with the key on it also has power I would have thought the power came from the 'I" terminal to the ignition switch. Is this normal?