did mercedes in their infinite wisdom by chance wire both rear speakers together,i'm putting a cd player in and i can't get the right rear to work,the left rear works fine,so i look in the trunk at the speakers and they both use a black and a green wire. i have everything working,front to rear and left to right but the right rear just refuses to work.

well did some major surgery today and removed the fader switch and wiring from the console and found the wires that run to the back speakers.a black/white,a black/yellow,and 2 blacks,after wiring in the new cd player i still had no right,pulled the grille and speaker and speakers toast.