I am wanting yo place a larger extra TV in our motorhome. have a place that i would like to place a 48 " diagonal unit. the question is how to get it tied into the speakers and central entertainment panel, and the winnegard antenna. I do not like having to look up at the forward TV over the dash. do i use only the TV speakers? and put in a new winnegard for that TV? attaching cable when at a RV park. would like to have simplicity.