2013 Skyline Koala 25 DS Rocker Switch Above Tv in Bedroom

Hey Guys and Gals,just picked up a 2013 Skyline Koala 25 DS,not new to the game,but I cant figure out what a little black rocker switch does on the bedroom side on top of the TVconsule.there also looks like the female end to a a/c adaptor.next to it.looks like it leads down to the radio or thermostat.??