There are two fuel level senders, one in the electric fuel pump module, and the other in the jet fuel pump module. They are only concerned with fuel level indication.
If you can truly hear the electric fuel pump run, but there's no fuel at the rail, there are limited possibilities. (I am also assuming that there are no major fuel leaks.)
1. Your gas tank is dry, or nearly so.
2. Your new fuel pump's motor runs, but it isn't pumping fuel.
3. Your jet module is clogged or failed.
4. Your fuel filter is clogged.
I would think that #2 is most likely, assuming that you really do hear it running and that you only messed with the electric fuel pump. I'd pull it back out and see if anything is wrong about it.