I'm in the process of moving my Winegard antenna jack because it's located behind a cabinet and you just can't access it where it's currently at. So I get the cabinets out and pull the plug out and it has 3 jacks on the back. The grey one on the left says antenna I get that one, the middle one says cable, and it runs into a factory harness and goes down by the water pump and doesn't go anywhere, then the third plug says 2nd TV or something of that nature. So is this essentially just a 3 way splitter counting the front plug? I assume the 12volt jumper plug just amps the line some how? What I'm also doing is running a new outside TV cable wire to be able to hookup a tv outside but also would like for the exterior TV cable input to be able to work like with campground cable. Is there a better switch or another way to fix this, not really sure I need the cigarette plug as my inverter can be hard wired. Thanks in advance