I'm working on getting a 5.7L Hemi out of a Ram pickup into my YJ. This can be easily done to Jeep TJ Wranglers because Teraflex offers a plug and play harness to match the Hemi's PCM to the Jeep TJ harness. However, they have not developed such a harness for a YJ.

http://www.teraflex.biz/pages/Hemi%2...une%202005.pdf

I can still drop in the Hemi, but I'd have to use their "Hot Rod" harness which offers no function to the stock YJ gauges. Teraflex mentions something about older style "twisted pair" wiring in 2001 and older Wranglers as being the reason for this.

Can anyone give me some advice on how to go about fabricating my own wiring harness, and would it work? I was thinking I could get wiring schematics from each a manual shift Hemi Ram and a manual shift 95 YJ and analyze them to see if anything can be done. I don't have much experience with wiring harnesses or PCM's, so any info you can give me will be a great help. Thanks