Just Mark, There are some really easy tests you can perform on the fuel indicator system without tearing everything apart. Example, once you have power to the gauge, it can be tested by simply grounding the sender post. Gauge needle will swing one way. Remove the ground wire and it will swing the other.
Some other tests require an ohm meter, I would suggest a VOM (the one with a needle). Cheap ones can be had at Harbor Freight, or borrow one from a friend.
The guys here will get you through it. You will still be old but wiser.
