George993

Hi, has anyone got description of the connectors for the audio/radio unit? Somehow I can't find it anywhere - mostly all the inputs (steering wheel controls etc) as the outputs (speakers etc) are easy to figure out even without diagrams. But description of all connectors would be the best! thanks!

Rudeney

Here's a good resource I found:

http://benzbits.com/RadioWiring.pdf

Note that things like steering wheel controls, switched 12v and illumination don't exist as individual circuits - they are controlled by the CAN bus. Also, you may not have speaker wiring in the harness if you have the Bose or Harmon-Kardon systems as those use fiber optics to send audio from the head unit to the amplifier.

George993

Super, thanks Rodney (so I guess I will have to skip the steering wheel controls - it will be a bummer if my car also has the fiber optics - I'll find out soon)

Rudeney

There are CAN bus interfaces you can get that will interface wit the steering wheel volume and channel control buttons. Some of those also provide the illumination and switched 12v signals.

Ian Pollard

Hi, my 2004 clk320 has a bosch comand 2 fitted. I have 3 speakers in the drivers door , a tweeter , front and rear of door speakers , can anyone tell me if all 3 speakers are wired together in the door ? as the front lower door speaker is not working but the other 2 door speakers are .

Thanks