gauge frustration

Sorry, I did mean the fuel gauge. I was so focused on the temp gauge not working that I misspoke. I have disabled the limiter in the gauge. I took the feed and sent it to the new external limiter so the gauge no longer gets the 12 volt feed. Do I need to open the gauge and cut the wire to the limiter? I then took the 5 volts from the external limiter and sent it to the 3rd terminal on the fuel gauge, the 5 volt terminal. I also replaced both circuit boards. My fuel and oil pressure gauges work just fine but the temp doesn’t move from cold. I’m getting the fluctuating voltage at the sensor and when I ground that wire the temp gauge sweeps. From what I understand from that is, the gauge and the limiter are good. I am on the 3rd sensor. I thought that maybe I ordered one for a dummy light, so the next one I ordered, I made sure it was for a gauge. I temporarily put a temp gauge under my dash for now but I want to keep the original look.