I have a E200K (W210) w/ MB Audio 10CC (Single Dash CD). Comes with 8 Speakers AFAIK (splits on front doors, Coax on rear doors, & 2 mid-bass? on rear shelf).<br> <br> Few Q's that I hope you can answer;<br> 1. Would I have the CD Changer cable running into the trunk? Where (exactly) is it and how do I get to it?<br> <br> 2. Where (if any) are the amplifiers?<br> <br> 3. The rear shelf has 4 X (6.5'?) holes and only 2 of these have a mid-bass. What mid-bass or better still sub could be available in this size. And should I consider having all 4 of this?<br> <br> 4. Would my stereo have the 'auxilary input' in the glove box? I've looked but cannot see the plug. And if so, how can I select Aux Input?