Probably start here
http://www.driveoemautoparts.com/
or here
http://www.factorymoparparts.com/mopdfca.html
to at least Id the part number for the harness if you haven't already.
But finding "parts" for wiring harnesses is tough. I busted a pin on the door side of the rear door harness and while you can buy the chassis side plug and pins, you simply cannot buy the door side plug and pins - the whole harness or nothing.
Oddly, i cannot seem to find all the bookmarks I had for that little project. Occasionally, the app I use allows a stray browser to jack my bookmarks, then I restore from the "cloud." I must have gone too far back on a restore and lost all the Dodge bookmarks.