the pac peice will need programming. it is also IR based so response will be slower than a direct wire item. . I have sell one that will do a plug in on the radio and auto learn the controls.
the buttons are specific and if you have the WRONG set the cruise unit I use WILL NOT work.
happy to sell you all the bits though and you can pop it all together yourself. saves pying for a full steering wheel. I have a car to do in the morning that is getting exactly this except the radio is a clarion navi.