Ive got a 2007 with the basic bottom of the line single cd head unit. All the simple harness adapters for this vehicle are listed for 2008 and up. For 2007 they list a harness with a amp bypass harness that is a mile long. Does my basic unit that sounds like mud have a factory amp? All the simple adapters say they dont fit my 2007 and refer me to the expensive harness. Has anyone with the basic radio in a 2006 or 2007 done this swap and knows which harness to get?