Im not sure where to put this but i have a 2001 half ton that has a 91 cummins in it so im trying to find out how i should wire the lift pump in the tank to send fuel to my lift pump on the cummins. It just takes 12v to turn it on but i dont want to burn the pump up. so any help would be a big help to me just to know where to tie it in.

 

there should be a stock relay within the existing system that ran the original fuel pump...i would think you could use that to run the lift pump

 

Yes but alot of th wiring is hacked from the change and thE computer is gone so there is nothing to tell it to come on

 

so then through the fuse block, find a circut that only has power with the key on...run the pump off a relay with power off the battery, then use that key on circut to activate the relay...problem solved....