GOLDWING
HI RICH,
I am using a J&M CFRG GL1800 interface for my radar detector, nav, mp3 and phone. Now I have added a CFRG Zumo 550 Bluetooth cord which works great except I get a lot of enging noise only when I try to use the phone with bluetooth. My helmets are not bluetooth but in order to get bluetooth in my helmet I would have to purchase a new Nolan helmet with the bluetooth unit build in. Did I answer you question? Thanks again
Rom