Optronics-RV Stop/Turn/Tail Light with Back-Up Light-Combination stop/turn/tail light with back-up light and white base. Includes license plate illuminator and mounting bracket. Features Snap-On lens and easy to change replaceable bulb. All-weather molded plastic housing and durable lens protect against corrosion. Replacement bulb #2057. White base. Ground wire. Light dimensions: 4-5/8 inch Width x 8-5/8 inch Length x 2-1/16 inch Depth. Polypack.