New from Arizona

Hi everyone!
I am working on my 08 420FM adding license lights, horn, 12v socket and winch. Came here looking for help. I found the terminal for the 12v accessory socket by the RF fender, but I also found 2 switched terminals under the seat. Has anyone used these for anything useful? Should one be for the winch? It is nice to be able to download the manuals for these for free. My husbands 95 Outty no such luck.
Lisa