Our Mid-turn Marker Lamp and new SAE Mid-turn Marker Lamps serve two functions: turn signal and marker lamp. Lamp is perfect for an auxiliary mid-turn/mid-marker signal on school and transit buses or commercial vehicles & tractor/trailers for increased side visibility. Light includes weatherproof connector and may be ordered with or without black rubber grommet for recessed or surface mount applications. When you need additional side lighting, this dual function lamp is sure to fit the bill. SAE Mid-turn Lamp meets J595, J578 & J2039 for vibration, moisture, corrosion, warpage & chromaticity certifications.