What do YOU want in a new wiring harness?
You'll never make everyone happy. And unless its $150 or less a lot of cheap *** mopar guys won't even give it a second look. That's just a fact of the mopar market.
If you reality want to make a good harness mimic this
http://www.americanautowire.com/classicupdate.html. only a mopar version. That's what is needed in the mopar world. Only things out there now are street rod universal kits like I put in my car. It was very complete and top notch quality and easily adaptable to my car but far from plug and play. Then you have the basic little ez wire style kits that are not a very complete kit at all. The classic update is a huge void in the mopar market. Even if you or someone else builds it the trick is selling it to a cheap crowd of enthusiasts.