The Bose package is the speakers and the amps. Mine is Bose as well. The headunits on all our cars is the Becker 1692. Looks like this -



The GROM adaptor plugs into the back of the radio harness (not the trunk), into the CD changer input, labelled 'C' in this diagram -



The GROM adaptor basically replaces the CD changer, and your iPod becomes the new changer. If your car has the CD changer, you can just leave the plug in the cavity behind the radio, should you ever want to use it. The CD changer itself is located in the trunk and is made by Alpine.

__________________
Chris
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired

"And a frign hat. They gave me a hat at the annual benefits meeting. I said. how does this benefit me. I dont have anything from the company.. So they gave me a hat." - TheDon