Best buy just plugs in your auxiliary port! Makes anything you want Bluetooth

 

I used to put mine in a windshield pouch and ran a wire to the aux jack. The best way to use Bluetooth is get rid of the stock HK radio and replace it with something much better. My HK head unit bit the dust. Thought about having American Iron repair it but for that price, you can buy a really nice waterproof marine unit with all the features you want. Many are plug and play or can be made to use the handle bar controls.

 

I use this one for BT on my 13Limited
https://smile.amazon.com/Mpow-Blueto...=bestcont06-20

Long play time on single charge (edited for mistakes)