No dome lights fuel gauge says below E and low fuel light comes on

Ah!! The infamous Sports Trac! The related fuse is no. 26 on the fuse block on the left side of the dashboard. But, still this may NOT be your problem. On changing the fuel pump, the gauge sending unit may have dislodged. When you turn the ignition ON, does the fuel gauge needle tend to move down? I found that a tankful of non-ethenol fuel will sometimes resolve the whole issue. Good luck and please let me know the outcome.