Our R4 Series lights are a versatile product line of 4” round LED lamps including these Red and Amber Rear Turn lamps. Versatile lights are equipped with three wires which allow you three functions in one light. Use as a Rear Turn or Front/Park light, Auxiliary Side Marker or as a Directional Signal lamp. Also available with our exclusive “one piece housing” design (ECRV44xTx) for a truly water tight light that will eliminate water damage and rot. If water seeps behind the light it is safely held in the waterproof mounting flange and will not drain into vehicle. Very popular lights in DOT/Construction vehicles, Commercial Vehicle Trailers, Transit Buses, Shuttle Buses and School Buses. Lights meet or exceed SAE 108, J1395, J585, DOT, FMVSS 108 and CMVSS requirements.