My wife likes music during long stretches on the road. To keep her happy, I had considered putting a bluetooth+cabled option: specifically, I put two large zip ties around the chassis brace at the base of the dashboard. I left them as large loops and drove around with a JBL Charge 3 in the loop. It works well hanging from the loops, but not loud enough, and I didn't think we would really use it. The more time she has spent in the M3W, the more I think she gets it. Earbuds and her phone will suffice on the occasion she wants tunes. But if I had to do it, I would try the JBL Xtreme (louder, still would fit). Bear in mind, I have the aftermarket narrow console; not sure if that gives me more room than stock.
.http://www.cyclesounds.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/4/4/4405-0015_series3_harley_1.jpg
