Holy Snap! Check out the response I got from LightOn when I asked about compatibility of rear Dyno Light...
Joshua,
Light On! has a tail light that is scheduled to start selling on October 15th. I’ll make sure to send you notice when that time comes around.
It is super bright and visible from the side when moving or stopped. It mounts to your seat post but will adapt to rack mount or fender mounting.
Thanks you for your interest,
Brian Engelen
Light On!