i have a dodge ram 1500 and it just up and died no sputter or nohting just died so i noticed i had no fiel pump so i hauled it home adn checked the fuel pump it wokrs so it is electrical so i replaced all the relays,crank sensor, cam sensor, map sensor, tps, new pcm im gunna tear apart the wire harness tomrow to check for a broken wire also check the o2 sensors still dont run if i jump the fuel pump relay the truck will run for a min then die when i checked the ground to the fuel relay i had no ground to pin 87 and i also put in a new ingtion switch im starting to give up anybody have any clue what it could be

 

You don't say what year your truck is.
I hope you checked all your fuses before replacing all that stuff.
If you jump the 2 fat terminals on the relay socket (30 and 87) your fuel pump should run constantly. If it doesn't make sure you have power at the jumper and ground at the pump, then trace the wiring
Terminals 85 and 86 are the relay control circuits