I have been searching for the same answer for my 2013 390 BH, Camping world 3 locations have been absolutely no help either. Jensen has a new almost $800 replacement unit but can't give me a local dealer who can help me with it. Not sure I want another Jensen anyway, they discontinued Nav apps for a two year old radio. I checked with our local Mega Auto and Marine Sound joint on the ave and the owner was one only guy there, several guys waiting, he was courteous and showed me a Alpine unit that does all music, computer searches, Nav and sure it would do 3 cameras on sale (of Course) for $699. He said to bring my RV by and he would make sure it all worked before I had to buy it. WOW after a year of looking, finally some direction from a small local shop with service and courtesy.