Where have people been installing the bluetooth module for the AVIC-D3? Does it fit in the dash of the tC with the headunit nicely? Also where are people hiding their microphones in their car? On the visor?

 

I put the BT unit under the carpet on the side wall of the passenger foot compartment (I guess you could say to the right of the center console too... :D) I'm assuming the BT unit for the D3 is the same as the one for the Z1.

As for the mic, I put it on the headliner, above and a little to the right of the driver's seat. This keeps the echo and wind noise down. Most ppl don't even notice it there, and you can't see it outside of the car.

 

I had my BT unit sitting on its side, right on top of the cubby hole. The double-sided tape that came with it held up fine for the 3 months I had the D3. The microphone I mounted on the steering column with the wire tucked behind the dash. The upper and lower dash aren't interconnected so you can actually push the mic wire through.