right now I have the stereo with the 6 disc cd changer and factory sub under the backseat. I found a factory nav system for sale from the same year, should it just be plug and play or will it take additional wiring?

 

Might get a quicker / better answer here, the redirect is up for 1 week.

Good luck

 

I installed a factory nav system in my 2005, and its very easy. Everything is plug and play, but you will need a Chrysler antenna adapter. Any decent stereo shop will have it for a few bucks. I assume you are getting the GPS antenna as well with the purchase...it can be mounted on the metal cross bar that runs underneath the top dash tray.

Post up any other questions when you get the system. You can check the link in my sig for my install...there is a good thread I referenced that went through the entire install in detail, that's what I followed and it was a snap!