Another gas gauge problem

If my memory serves correct, your inst' panel has 2 connectors on serate sets of contact pins posistioned in staright lines. Loose pins on those boards are just as common as any other. I would go behind the left kick panel and check that connection and test there also.
Leave a meter on the dash side of that connector and see if the limiter voltage comes and goes there. If it does the next spot to check would be the contact pins on the back of the panel.