Hi
I have added last year, first thing to check is if you have the wiring in your car, if you pull the plank out were the unit and power port sit hopefully you will find two spare plugs ,(1 BLACK 2 WIRES ) AND (1 FLAT GREY PLUG ) if you do its a go if not you may need to give up! If it is all there get your parts and fit power port will plug and play the rear audio is a little different if you have the cd30 it's not compatible but the cd30 mp3 is and will plug and play but if you have the cdc40 or cd70 you will need it tech2 to activate it, in mine I have a cd70 and my aux port still works but can't say about the other units hope this helps!