[70STOVEBOLT]

Ok, I'm pretty sure it's a ground issue with the tan wire. As I mentioned, the gauge goes up to about 3/4 full when I turn the key off. Yesterday when I opened the door to get in, I noticed it jumped up to about 7/8 and when I closed the door, it went back to 3/4. I did not have time to check it out last night but this morning I stopped and put about 10 gallons in it and the gauge now reads about 1/2 tank with the key on, but it jumps around even when sitting still after it stops sloshing it moves back and forth. I am going to remove the sill plate and check it out tonight. Hope it's just grounding out.