I just found this post...

I'm finally getting settled in my new place to start getting back on this project.
I'm at a point where I need to sort out how I'm 'gonna run this.
Possibly megasquirt and a trans controller.

I spoke with a Chrysler tech who said he'd done a couple with using the factory harness and weeding out the emissions related plugs.
I can't remember what he said about trouble codes this would generate... I'm guessing it'd run in a limp mode?

It would be nice if there were a "plug & play" harness like you can buy for Chivy's.. from someone like Painless, etc.

Rick