carltoncruiser

i just put a '92 mustang 4cyl into a '89 4cyl mustang and am having issues figuring out wiring. i swapped out the engine harness and computer but dont know if i need to also replace the harness that goes through the firewall on the drivers side or if there is a wiring diagram i can use to make this one work. also i think the fuel pump relay wiring might be different. any help would be greatly appreciated!!

AmericanICON

Sorry, I don't have an answer for you, but I'll bet if you post this in the 2.3 section, some of the experts there could help you out.
Good luck!