I have 09 dodge ram. head unit plays dvd but only in park it's automatic. can i bypass wires.

 

google "mygig lockpick" you'll have your answer....i bought one and it was as simple as plug and play and it works flawlessly!!!

 

If you don't want to have to deal with the Lockpick customer service headaches do yourself a favor and Google "allgig-usb". A great product and excellent customer support. Also, unlike Lockpick, any future updates to the unit are free.