I may have missed this but can you just have a solid lightup when brake is engaged or is it only strobe features? What year is your low rider? Mine is 2014 and I'm having the issue with the brake light always on and pressing the front lever forward to get it off more or less, once I get that fixed this light will go on! Looks awesome and great video, thanks.
It does have a "steady" mode listed in the user manual, but the strobe features are what it's mainly designed for. It definitely brings more attention to the bike from those following you. My bike in the video is a 2019. Good luck!
i notice you put the gasket on in the reverse order = sticker side to the chrome piece. On my new HD OEM tail lamp replacement the entire unit comes with the gasket sticker side to the plastic tail lamp.