so I have a 1988 notch factory 4cyl car that i’m dropping a 94 5.0 ho into, or trying to. i would like to keep it fuel injected. i have a ton of harnesses ranging from engine to lights to injectors and not all of them have the ford ID tags on them so i don’t know what years some came from. i can make out a couple of them, i have two engine harnesses tagged F0ZB which is for a 1990 mustang. i also have what looks to be two 1989 computers, one an a9l and the other an a9p that came with the harnesses. i know the L version is for manual and P for auto. im planning to use the a9l because i’m putting a t5 in it. but my issue is since the computer is from 89 do i have to use a 1989 v8 harness to plug into it, or can i use the 90 harness i have already. also the two harnesses are different but both tagged f0zb. they are similar but have a couple different connections. i planned on reusing the headlight harness and just extending the alternator plug also. wiring has never been my strong suit but i am determined. could not find a thread that explained how to solve my issue so i apologize if this has been answered i just could not find it. any help is greatly appreciated.