Hi Spoon12,
I had a no crank, no start issue a couple of years ago. You might want to start by measuring all of the voltages before replacing the harness - the solution might turn out to be adding a jumper wire over the broken wire. Here's a link to my log where I documented the steps I used to finally find the broken wire that prevented my car from starting.
Good luck, sincerely
-Jerry
no crank, black rectangel/square in the IC - CrossfireForum - The Chrysler Crossfire and SRT6 Resource