You need to buy a wireless interface module that hooks into the '14 and later Boom infotainment system.
But mainly only work with HD blue tooth headsets...
"Harley-Davidson headsets feature proprietary software that delivers superior audio quality with stereo output compared to non-Harley headsets which provide a mono sound output"
More money for little return.
Nice...
https://www.harley-davidson.com/stor...terface-module