Bluetooth Compatibility to my installed vehicle radio

BruceTranter Registered Users Posts: 1
New Seeker
The Rider is Bluetooth compatible and my installed radio in my vehicle is Bluetooth compatible. Rider requires a "Headset" to get audio out as there are no internal speakers. Why can't the Rider see my radio as a "headset" and play audio through it? This is extremely frustrating when I use the Rider in my vehicle.