I bought this for my son in law for Father's Day, because he actually owns three Harleys. Although he is a really good rider, it cannot be said too many times that safer is better. This goes on the back of the bike and illuminates the license plate. The led strip will flash when you hit the brakes, letting the cars behind you know that you are stopping. It grabs the attention of the drivers and that makes it safer for the riders. It is very simple to install also. If you are looking for a great safety measure for anyone including yourself this is a great one! Inexpensive, and yet priceless!
I was given this at a reduced price..
https://www.amazon.com/KOYA-Waterproof-Universal-Motorcycle-Flexible/dp/B01KLR6HHQ