please I Need Help The Battery On My 4.6 Hse P38 Went Flat I Left It For Approx Two Weeks , When I Put A New Battery On It The Windows ,sunroof And Electic Mirrors Have All Decided Not To Work .....im At My Wits End With This Car Any Suggestions Would Be Greatly Recieved .. I Have Thought Of Petrol And Matches But The Wife Talked Me Out Of It