I tried plugging in my 700wx into an FM Modulator so I could listen to voice command over the radio...audio worked great, but no mic. The speaker phone is hard to hear in the car and I hoped this would work.

Is there a way to use a bluetooth earpiece and set the headphone jack (software) to speakerphone so I can use the speaker on the phone with the FM Modulator plugged in to the Headphone jack?

Hope this makes sense.