I just had my mic installed by the dealer. I had them run the mic up the left side of the windshield so it is near my head to pick up my voice. They did a nice job. It's a warranty item as it should have been done as part of prep.
2015 Jayco Greyhawk 31FS-"Scamper"
2015 Subaru Forester 2.5i Prem. 6 Spd
Blue Ox Aventa LX Tow Bar
2014 Jayco Jay Feather X23B-"Glampy"(Sold)
DW, DS, DDx2, and Bandit & Fletcher