ok then you're right, you will need the navigation bezel the rec navigation and a gps antenna. Check our for sale section out kelewdro (sp?) aka chris is selling a rec for around $500. But the rec will be completely plug and play unplug you radio and simply plug in the rec.Not a cheap mod lol but its an 05 and im just looking to see if using a stock GPs unit would be cheaper than aftermarket, either way ill more than likely would need the bezel.
doesn't seem as involved as i thought it would be. seams like the hardest part is finding the stuff you would need to install themTodd made a good point. if you are going the mygig route then youll need the said lockpick. They are all plug and play. as for the antenna, you can either place it behind the bezel in between the 2 vents or underside of the center dash speaker grill if you don't have a center dash speaker there.
depends what year 300 you have. if you have 05-07 300 and plan to go with the rec navigation then its all plug and play no additional harness will be needed besides the purchase of a gps antenna. If you have a 08 and want the my gig navigation then its plug and play as long as you choose the right speed unit, which i believe is the slow speed one. If you have a 05-07 and you want my gig in your car then a special lockpick harness is required which will be approximately $250.