Aftermarket sending unit not the same

thx for the reply i have stock fuel gauge, and it worked all the time, just when i get the new fuel sending unit it shows half even the tank was full, i f u say both reach the buttom then i will try with another gauge

thx Peter

I don't want to steer you in the wrong direction here so I have to ask, What was the original problem and reason for replacing the sender ?
We can do a few tests with an ohm meter if you want.