I 2nd Evans Wiring Harnesses. I've said it before and will repeat it that if he makes it, this is the place to go. His engine harness for my 71 Demon was 100% spot on to the original. And you have your choice of electronic ignition or not. I've used his stuff on others and had the same experience.
I had to get a forward lamp harness from M&H for the Demon. It worked but the dimensions were off from the originals providing some "opportunities" on the installation. Also had to remove the Dart fender-mounted turn signal indicator wires. No choice not to have them.