The Universal UnderCover LED Insert. This LED hide away insert elevates safety lighting to a whole new level with Extreme Angle optics designed for maximum lighting output. Insert is a quick & easy retrofit as it fits into existing 1 inch strobe tube cutouts in headlight, taillight or corner light assemblies. Insert is self-contained with in-line flasher & features 4th wire to set optional Cruise Mode to reduce light output to 20% power. Surface Mount Bezels offer flexible mounting options and come in black, chrome & white. 10-30 volt option and alternate lenses are available.