J&M XM-Sat/Digital Music Adapter/Switch Kit for Honda GoldWing 1800 - One Size If you wish to use the XM satellite radio feature of your audio system, in conjunction with the digital music changer (21-8058) on the 09-10 GL-1800, use this adapter harness/switch kit This kit will allow you to switch back and forth between XM satellite radio and the J&amp;M digital music player/changer