I have a '17 RL and have fitted a Thinkware M1. The cameras are larger than most other brands, something I like because people see them, know they might be recorded and behave accordingly
https://us.thinkware.com/product-page/m1/
I made a small aluminium bracket that mounts the front camera just below the windshield lowest position, and the rear on the Left Side of the top box. Recorder sits nicely under the seat. Cable lengths are good and it was easy to wire up. I use a TP7AS Bypass relay for my trailer so just added the camera to the running light circuit so that its on when the ignition is on. Footage is pretty clear, can pull number plates easily.
No interest in a display, too busy riding and dodging idiots

Perhaps those with an ego might find them useful