Gary I can't find where I read this, but it was in the past week. Move if you can to the appropriate thread.
I read about this adepter in another thread and though it might be my answer.
EDUP EP-B3502
At Amazon at
http://www.amazon.com/gp/product/B008ATAIUU/ref=oh_details_o00_s00_i02?ie=UTF8&psc=1I have a Sony head unit in the bike with BT capabilities. What it does not have in the Audio BT section is a HSP, headset profile. Profiles are what BT uses to communicate with various devices.
I'm sure it is a safety issue, don't want people in cars driving around with headphones on
I have been looking for something to integrate my Sony radio, iPhone or iPod and Nolan helmet
I can run my iPhone and listen to music with the helmet, but can't control the iPhone easily.
I can use the radio to somewhat control the iPhone/Pod but can't BT the music to the helmet.
What I am currently doing with mixed results is using radio with input from the phone and then hard wiring the radio output to the helmets mini plug input.
I was hoping this BT adapter would work, but alas, for those interested, it will not accept the output from the radio.