fuel injection swap from 88 to 83

[wild wille]

I pulled the 350 and complete wiring harness with computer out of 88 burb and installing into 83 pickup and it look like the harness should just plug in where the old harness is . I have already run the computer harness in the cab and installed the computer and have installed a after market electric fuel pump and dont want to plug the harness in to the fire wall and burn it up soi was woundering if one else has done this swap and if so was the harness wired correctly. i have looked at a wiring diagram and looks ok? Need just some insight. thanks