89 hatch with sr20det redtop fuel pump prob.

[DLYNNW]

i have a 89 hatch that had a ka24e in it witch we swapped out for a sr20det redtop and we wired up the engine harness and the int. harness and she ran great so we left it go for a few day and went back to start it up and it ran then after a few min. it started knocking n bucking and stalled out like it ran out of gas. well we checked it had gas. then we noticed that the fuel pump was not coming on so we checked the fuel pump wires and fuse in the engine bay all was good. so we check int wires at the fuel pump connector in the hatch and nothing no power. so if anyone knows why its not getting power to the fuel pump inside plz help!!!!!!!