Make sure you are seen with one of the most visible tail lights available, mounted up high on your headrest mast.
This bracket is designed for the Planet Bike Superflash. It may also accomodate other lights. It has a 7/16" diameter counterbore for mounting the light. All attachment utilizes self-threading screws into the plastic bracket to eliminate nuts and lock washers.
A template is included for drilling holes if the bracket is not purchased at the same time as the headrest.