I have a 2014 Dart SXT with the 8.4 uconnect with usb and Sirius radio. I want to add nav I know I need to get an RE5 and get the code. My actual question is if the nav wasn't activated in the previous dart will it work once I use alfaobd input code write vin to radio and do proxy alignment will it now work? Or will it still need to be activated by the dealer? Last since I have Sirius radio am I all set as far as antenna and cable?