[davido30093]

I am putting a 2.3L engine from a '93 Mustang into an '89 Mustang that also has a 2.3L. I have the engine, engine wiring harness, and computer from the '93 to put into the '89. Both vehicles/computers were 2.3L 5 speed manual. Do I also need to replace/modify the "computer to engine" wiring harness as well?

Thanks.