3 Light Marker Light Bar Red
RV accessory. It is a bar that has three red lights on it, and it can be attached to the back or the side of an RV. The purpose of this product is to increase the visibility and safety of the RV, especially at night or in low-light conditions. The product description says that it has a “black base with three red lights and a chrome bezel”. It also says that it is “easy to install with two screws”.