I like using my Garmin Zumo. $700 for the Zumo & $200 for the XM puck. I have GPS, XM, mp3's and bluetooth that liks my phone (pulls in address book). Know where I am going, where I have been and can let those that care know as well.

 

Here's my set up.

Works for me.

 

You have extra connectors because your friendly HD dealer sold you the one you really didn't need. The three connector for $50 was all you need for an ultra or limited. This is the one I used for my limited and it was all that was necessary.

 

In my case and my wife's case, we needed connectors for XM and CB. I had to replace her factory cable with one for both when I added the XM to her Ultra (CB comes from the factory with that model). I think the new cable for her bike had an extra connector for Bluetooth. In my case, I can't really say since I let the shop do the work, and since I started with a Road Glide, it had neither CB nor XM from the factory.