Registration and Posting Agreement
I think I figured it out. I traced the wire to the junction block on the fire wall and then to the gauge from the fire wall. I could see where it was getting power so I unscrewed the junction block at the fire wall to find that underneath it was covered with something stick and nasty. Guess some how it was cause electricity to flow across. Hopefully this fixes it.
...Where would that wire be receiving power from? I can follow it to the fire wall. It's the exact same color wire plugged into the harness.
All of the gauges in the instrument cluster connect to the flexible printed circuit board (PCB) on the back of the cluster housing, via shiny silver colored metal clips. Commonly, dust and tarnish degrade the connections between the gauge prongs, the clips, and the PCB. Use a rubber eraser to burnish the PCB foil (be careful, because the foil peels free from the board easily). Use crocus cloth to burnish the clips. You may need to increase tension on the clips for a good connection to the PCB and the gauge prongs.