ok so i grounded the parking wire to wtach tv while in drive with no brake well it didnt work. it works with all other decks. this is my first pioneer deck with nav is there another wire that needs to b grounede? it works till i get to 5 or 10mph then kicks on the warningg and wont be able to watch tv untill u slow down to under 10 or so. so is there like a speed senseer wire or something plz help thanks