This is a little bit of an old thread that I found a couple years ago. Moving the wire on the pot does make the gauge work in the correct direction. Accuracy is an issue. My gauge would show empty while still having a considerable amount of fuel. I can't remember if the arm is long enough on my sender or not. Still better than working in the wrong direction since I don't drive my Comanche very often. Now I have to switch the wires back the other way since I'm installing a gauge package with a mechanical speedometer so it will finally work.
No problem. I've got one set coming now. I wonder since they changed the speedometer attachment in 87. Were the clusters white in 85 and 86 then blue 87, 88, 89 and 90?