Had anyone updated to new wiring harnesses?

I bought a Ron Francis kit. They did a lot of custom modifications based on my specifications. Not close to stock, but the Access 24/7 kit is amazing because it has a magnetic mount that's super easy to work with. Also, ditch the firewall connecter, drill all the holes out with a 1/4" bit and just pass the wires through. Most of your electrical woes are likely coming from that connecter. It always goes bad. ALWAYS.