Weave

Just installed a curt hitch and flat 4 trailer electrical. Now I'm installing a 4 way to 6 way trailer adapter. I am looking for the nearest 12volt line I can tap into. Also, I don't really need the brake hookup, but if there is a place to conveniently hook it up, I will. Does it need a brake adapter? My popup doesn't use it, so I'm not that worried about it. Thanks to anyone who can help.