There are296 pages in the supplied owner manual, plus a separate "Quick Start" manual. A link was provided above, but page 204 does not address the function of the switch.
If someone has a link to the function of the mystery switch, I'd really appreciate it!
So my special order built to specs one week old vehicle evidently came with an old manual. But what the hell, I didn't even get a pigtail for the trailer brake plug in (which had always came with other trucks that I have ordered), so I guess they are just cutting costs and maybe customer service...
So can anyone post a pic of the section of the manual dealing with the function of the switch, since evidently it was not in the manual that came with the vehicle?