Installing iPod kit amplifier (A204 870 3994) in C300 (W204)
1) Remove the passenger-side kick panel (black plastic panel under glove compartment) by removing 3 Torx screws. No other panel removal is necessary.
2) Locate little black box mounted to pillar (mounted to wall by passengers right foot) with ethernet-looking cable going into it.
3) Unplug this cable, and plug amplifier into it. Plug the dangling cable into amplifier.
4) Wrap the amplifier in supplied felt or Velcro it to pillar.
5) Re-install kick panel.
6) Enjoy awesome iPod sound.
This only takes about 10 minutes!




I've seen other information about this but it was applicable to 2008-09 only.




