I just picked up a 2007 GL450 with the Harman Kardon stereo and Command navigation system. The dealer wants over 700.00 to install the iPod interface. Is this available elsewhere? I'm pretty handy with the electronics and know I could put this in myself. If MB is the only place to get the interface, I'll go there, but if the correct one is available on eBay, I'll do that instead.

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Retired NYPD
Retired USMC
Life is good.