The 4" Self-Grounding LED Marker Light – Red (J-225-R) is a compact and high-visibility lighting solution engineered for trailers, trucks, and heavy-duty commercial vehicles. Featuring a P2 rating and reflex snap-on lens, this sealed LED lamp ensures optimal illumination and DOT compliance. Its self-grounding screw-mount system eliminates the need for an external ground wire, making installation fast and efficient while maintaining long-term durability. Detailed Information: Light Type Self-Grounding LED Clearance/Marker Lamp LED Count 2 Diodes Lens Color Red Mounting Screw Mount Lens Type Reflex Snap-On Lens Wiring 6″ Lead, 2-Wire Configuration Rating P2 Rated Fitting: Designed to fit a wide range of trailers, trucks, and commercial vehicles. The screw-mount system ensures a secure and stable installation, while the reflex lens enhances visibility and meets DOT/SAE marker lighting regulations. Features: Self-Grounding Design: No external ground wire required for simpler and faster installation. Reflex Lens Construction: Enhances visibility and meets reflector requirements. Durable Build: Made from tough, impact-resistant polycarbonate materials. Quick Installation: Equipped with 6" lead wiring and a reliable screw mount system. Energy Efficient: Bright 2-diode output with minimal power consumption for long-term use. Interchangeable Part Numbers: J-225-R Product Overview: The 4" x 1-3/8" Red Self-Grounding LED Marker Light (J-225-R) is designed for heavy-duty applications where visibility, reliability, and compliance matter most. Built with a rugged housing, this sealed light uses two high-efficiency LEDs behind a reflex snap-on lens for enhanced brightness. Perfect for clearance and side marker lighting on commercial vehicles, this DOT-compliant lamp is quick to install and built to last.