Should I get a new head unit or just add cable?
The other thing I've thought of doing is getting a head unit from newer Mercedes vehicles, especially those with touch screen and bluetooth. Are those plug and play? Are they easy to install?
Thanks
They are not touch screen and don't have bluetooth, but they have navigation(you'll need to source nav dvds somewhere).
You can also install an aftermarket headunit (plug and play if you don't have Harman Kardon audio currently). See sticky thread on diy modifications.
The cable can be found for $45-50 online, search by part number.



