My 91 Se's Bose Speakers Go Dead When I Hit 2500 Rpm On The Tach. I Am Thinking It Is A Loose Wire Somewhere, Maybe The Ground, But I Am A Novice(understatement) And Have No Idea If That Is In Fact The Case. Any Insight Would Be Greatly Appreciated. Also The Right Front Speaker Hisses About 50% Of The Time When The Radio Is Working... Any Ideas?????