MCS-536662 - The Magic Brake Strobe is installed as a simple plug-in connection in the brake wiring. It will give you 10 user selectable strobe patterns. Four patterns are available with regular incandescent light bulbs; all 10 patterns will work with LED lighting.

Fitment:
Plug & Play on: 19-21 Electra Glide Standard; 14-21 Road King Standard; 2015 Road Glide Ultra CVOT; 14-15 Limited CVOT. Applies brake flash/strobe pattern to stock rear center taillight (does not flash Tour-Pak) Also fits: 14-21 Electra Glide Ultra Classi