I purchased an Avic-N1 over a year and a half ago had it installed in a 2000 Oldsmobile Bravada with a Bose 6 speaker system. I traded that vehicle in this past april for a new 2005 Chrysler 300c with a 7 speaker Boston Acoustic System. I recently went to have my Avic installed in the 300 only to find out that there is "no wiring harness" for this unit that would allow it to be installed in the 300c. They have a wireing harness for the 300m but not the C. Also I suppose there is a way to by pass the built in amplifier. If someone has information on how to install the Avic in without damaging the sytem or has any info on by passing the built in amp that'd be helpful. Thanks Dave.