OK since the switch is only 12.44 I am going to start there. Plus I talked to one of the managers today about the switch. We usually don't take back electrical parts but I told him what was going on in my truck and he said if I put the new switch in and nothing changes that he wouldn't have a problem taking it back.

The ground from battery to body looks good just checked that yesterday when I took off both terminals to clean and re-tighten. As for the ground on the radiator , I didn't see any loose wires anywhere near it. I did get a haynes manual while at work today so I will do some studying tonight.

Thanks for the help so far, keep the ideas coming . I'm not gonna stop until I can tell how much fuel I have in both tanks from the gauge on the dash.