jamie fuel pump trouble

ok my fuel pump works out of the truck but nut not when i hook it up ???fuse??relay??? any help please and thank you

 

Here is where you will find a factory service manual for your truck. It should show if there are relays' or fuses if you think this will help. Did you hook the fuel pump up directly to the battery and it works? Then when reinstalled the truck wiring is not working correctly? Do you have a voltmeter? I would help more if I could.