4" LED Stop/Turn/Tail, Round Tail Light, Grommet-Mount Kit. A New Installation or Replacement Lighting Kit for Trucks, Trailers and Other Applications. Kit Includes LED Light, Plug, and Mounting Grommet. 9–16 volt operating range. Regulated design provides voltage protection and consistent light output over a wide voltage range. Does not require "Top" positioning to meet FMVSS 108 standard. White diodes behind red lens. Industry-standard PL3 socket integrated into housing. Exceeds D.O.T. Requirements.