4.6 Engine wiring harness.

[3yearplan]

Since I am not using a donor vehicle I need a little help in trying to figure out which engine harness I actually need. I have a 2004 4.6 DOHC with 3650 trans out of a Mach 1. The motor came with the computer, and the harness that attaches to the injectors, alternator, etc., but I do not have the section that plugs into the computer. I have been searching e-bay and have seen plenty or harnesses but do not want to throw away money buying the wrong one. Any help is appreciated with a link, or a certain Ford part number or website that can narrow things down for me.4968

Thanks, Mike