Doing a GM tbi swap, and I am using a 1227747 computer, and what is supposed to be a 1989 truck harness. (I say supposed to, because I am finding the factory fuel pump relay wiring colors and pinouts to be different than what I am seeing on the prints here, which is not unusual). I have fuel, as pressure is to tbi. I have spark, as I can dribble fuel in the tbi and it runs. What I don't have is the injectors cycling apparently. I have verified all the constant grounds to the computer so far, and the switched/constant 12 volt wiring as well. Oil pressure cutoff switch is bypassed, all other stock stuff is in place such as EGR, etc. Did a quick search, but didn't see an injector thread, although I probably missed it. Hoping someone could point me in the right direction.The swap is a 350 Vortec engine, all stock, with the GMMP TBI swap intake, in a 1989 D21 Nissan pickup, by the way...