How do I fix my fuel level indicator? on 2003 Nissan Altima

I recently installed a new fuel pump on my 2003 Nissan Altima 2.5. Now my fuel indicator is malfunctioning.

Asked by for the 2003 Nissan Altima
You messed up the sending unit in the process... Got to pull the pump module back out and check it, it's all there together!
Thank you. I am going downstairs now to check it out.
pushrod, I checked again and found the electrical connections were not complete. Thank you for your input.
Glad you got it figured out!
You're welcom...