Auxiliary Stop/turn/tail Lights for Hitch Mounted Bike Racks Add brakes lights to your hitch mounted bike rack and improve your visibility to other drivers Fits most hitch mounted hanging style bike racks (maximum distance between bike cradles is 15 inches) Heavy duty, six foot power cord able to accommodate the larger capacity racks, standard 4 pin trailer connection Rugged UV resistant housing Bright, DOT approved, single sided tail lights...cannot be installed incorrectly