This was pretty much plug and play with the PAC C2R-CHY4 can bus adapter in my 2007 Jeep Grand Cherokee Limited with a JVC KD ADV49. Having my steering wheel controls back for this deck was a must since this deck has very hard to use controls on the "El Kameleon" faceplate. Program can be a little tricky but my advice is to read the instructions word for word and you shouldn't have any problems. All in all I'm very pleased with this purchase!