I have a Kenwood KNA-G610 navigation system for sale. I never got around to installing it on my truck as I generally use my iPhone for navigation. This works on Kenwood DVD units as it is an add-on navigation module, giving you in-dash navigation. This unit used Garmin Navigation.
It's brand new, never used. I have opened the box as I planned on installing it but like I said, I never got around to it. Comes with all the installation manuals, documents, wires, etc. that came in the box new.
Price: $250 OBO + shipping (These are going for $360+shipping)