The ground wire from the sending unit is grounded near the tank and usually on the frame.

It might help if you described the symptoms of the issue... clicking, grinding, nothing happens, etc...

You can start by checking the ground wire at the tank sending unit then the snaps on the ICVR on the back of the instrument panel for a good connection and or any corrosion.

http://huntsville.craigslist.org/cto/3967810489.html

You should sell it.

http://cgi.ebay.com/ebaymotors/Ford-F-150-1979-/281119996152?pt=US_Cars_Trucks&hash=item41740eb8f8Is it just me or is this truck ridiculously over priced?

http://huntsville.craigslist.org/cto/3818496446.html

Double check your vacuum lines. You could have knocked one off or broke/cracked one during your tune-up..

Mostly new interior.

Pictures of my truck that I'd been working on since July 12. 95% complete

...Deleted.....

Well I painted it... Wasn't much I could do around the high off part but the rest turned out ok...