I would like to install the BMW CB/Intercom on on 05r12rt. anyone have any experience with doing the install and in the operation? The BMW Radio/CD was installed when I bought the bike. But, I don't know what the existing Radio/CD will do i.e a switch on the existing radio toggles to an "Aux" which indicates to me I can hook up an accessory to the Radio/CD but there is no visible wire to do so. How does the CB/Intercom unit perform? I am going to use the existing Radio/CD antenna for the CB. Want to get an idea about how good the unit is before I part with the green stuff.