Stop in for a cup of coffee

Now I just need to find a 1-1/2 inch fuel gauge and my cluster will be finished.
Oddly enough, the only gauge that works in my car is the ammeter. so I don't need a volts gauge, just a fuel one since its dead.
But now I know what to look at. Thanks!
Just a silly question, but have you verified it’s the gauge and not a sender or wiring/connection issue?