Technical 2000 fiat palio 65 gas problem with fuel gage

[italianguy11]

hi, i recently changed my fuel pump.And i put in a used fuel pump back in and it works. But know the fuel gage isnt working. What can be the problems that is making the fuel gage not work properly.

 

[Peter Pick-Up]

Did you reconnect all the wires..??

 

[morsig]

earth