Technical question, JBL sound

[Chiocciman]

I have JBL/Nav in my Camry. Blue tooth telephone conversations come out of the driver's front speaker (very nice). I have a 2 way radio in the car and I would like to install it so that the audio from the 2 way comes out the driver's side speaker as well.

I can't use the Aux in because I would lose the radio in the aux mode or the 2 way in the radio mode. I know that the bluetooth audio is all done internally in the radio/nav unit and I know the mechanics of hooking up speakers.

Is there an easy way to do this without loading or impedance problems? Anyone ever done this before?

Thanks so much
Chuck