No doubt that wire should have been routed away from any exhaust section to prevent melting..ugly indeed. The burnt wiring is a big screw up for certain; big time error.
As for Cuervo's observation that the tech was not capable of installing the turnbuckles, I believe you missed something. When we picked up our '16 Hawk the owner handed me the turnbuckles and told me how to install and tighten them and he did this for a damn good reason: So that I would know how to re-tighten them and check them periodically. He even had me plug in the electrical connector between the Hawk and the Tundra; I know that was done right. My stance is that doing as much as you can on your own makes you more aware of issues before they get bad and helps you trouble shoot and fix what does go bad.
I found the dealership in Tigard to be first rate but I also assumed the responsibility for my rig and FWC when I drove out of the dealership . Just my approach but I have found less disappointments and fewer "break-downs' by getting hands-on and learning to maintain and understand the systems and mechanical aspects of the Hawk and my Tundra.
This forum really helps in presenting the nuances of what works and what doesn't; but being an off-road oriented seeker, I need to be as self-sufficient as possible to avoid being stranded or not enjoying the get-aways. Few service centers out in BFE.
Aussie...please post [photo?] how you routed the wiring or shielded it...I am interested.
Thanks,
Phil