Where can I buy a Motorola HF-820? I understand that I'll need an HF-820 to connect via Bluetooth to the Motorrad III GPS and connect the GPS to my phone via the Bluetooth connection-to get the phone to send/receive calls. I've tried numerous ways to get my cell phone to work connected via the AUX wire to the Voice II intercom system but never could get it to work. I've checked resellers and Ebay but I have yet to find an HF-820; they are out of production and I cannot find out what, if any product will have the same capability and be portable/small enough to go in the fitment case by the Voice II system. Let me know if there is anyone who has found a source that has the HF-820 in stock or a replacement. Appreciate the help.