I am an original owner of a 2005 Durango that came with the satellite radio system. We bought the lifetime subscription at the time, but not too many years later the signal started becoming intermittent. Having blown off the problem over the years, my wife asked if it could be fixed. My first question is the antenna itself, and after that it would be a good time to replace the radio, since it appears getting a harness to work with the factory wiring won't be a problem, let along fitting a replacement radio, with all the bells and whistles, into the funky dash cutout will also not be a problem. I guess my question for starters is a source for the rear roof antenna, itself?