I Have Couple Of Problems With My 2001, 325i Lately Is A Lil Shaky; Mostly When I Take Off It Shakes A Lil Also When I Put My Windows Down Or Use Power My Lights Dim And Rpm Drops And Is Getting In My Nerves Already, Ohh Also Can Someone Tell Me What Is The Hole In The Front That Looks Like For A Battery And The Wires In The Trunk If Any Of You Has Notice This They Loook Like For A Radio Or Something They Are Hidden On The Left Behind The Panel In The Trunk...