Fuel sending units

[Jkelley]

I have a 94 7.3idi dually with two tanks both sending units don't work does anyone know what size these tanks are or part numbers for both sending units or how I can find out what size they are thanks for any help

 

[icanfixall]

Front tank is 19.2 gallons. Rear is around 18.7 gallons. Might check fuse panel for a bad fuse. That kills both sending units and easy fix.