I have an 05 w/Voice II. Got the cell phone cord and plugged it in. Every time the cell phone moved, (turns, stops, etc) I got static. So, I padded the cell phone. But the real problem was, the only way to MAKE a call is to pull over, stop, open the tank cover, pick up the cell phone and dial it. There is no provision for hands free operation in the VOICE II setup.
I attended the unveiling of the BMW Adventure a couple of Friday nights ago and while there, the sales mgr showed me the CARDCO La Scala Bluetooth wireless headset for helmets. They wanted $150 for it and I found it on the internet at J&R Music World/Computer World. http://www.jr.com/JRProductPage.process?Product=4082926
First, the good news. It is incredible. It works. I now leave my cell phone in the special cell phone pocket inside my vest (or jacket), and enjoy FULL functionality of handsfree cell phone use including making calls, taking calls, etc. And, the sound is great. You hear the phone ringing and you can even choose to NOT answer it.
Now, the bad news. Cardco had apparently never actually had a helmet to mount it on, and was not aware that the microphone boom needs to be several inches longer and the earphone needs to have connectors that will allow you to connect to the speakers already in your helmet. The biggest downside for me at least is that the speaker (while very small and thin) mounts on top of my current speaker in my helmet and effectively makes my radio a mono instead of stereo and kills my ear since my Schuberth helmet has no excess space between my ear and my current speaker. I am going to have to remove my speaker on the left side, make the hole deeper and then figure a way to put the other speaker in so that it doesn't extend out as far.
Another idea (which is risky and would look butt-ugly) is to cut the speaker cable going into my helmet and somehow connect the Bluetooth speaker wire to it so that the new unit uses my current earphone.
I checked the microphone response at 60 mph and even though it is about 3 inches below my mouth, picks up well. That could be due to the fact that my Schuberth is so quiet.
However, this eliminates the problem of not being able to make calls or hear the phone ring. If there's a better solution I'd like to hear about it.
I know that are some new Bluetooth equipped helmets coming on the market, but I'm not replacing my helmet for another 4 years. So that's not an option for me.