Fristom Side Marker LED Light with Indicator A modern take on the classic side marker lamp for trailers. A key feature of this lamp is that the side marker light remains illuminated even when the turn signal is active. Built for durability, its compact, robust housing resists shocks, mechanical damage, and harsh weather. Easy Installation - No Visible Fixings Installation is clean and seamless thanks to the innovative "CLICK-ON" system, which completely hides the mounting screws from view. The Fristom FT-080 carries full European E9 approval. Wiring Breakdown: White: Ground Black: Clearance Light Yellow: Turn Signal (Cat. 5)