Features: UNIVERSAL FUNCTIONS: These trailer marker lights surface mount design for side marker lights, clearance lamps, roof lights, and identification light; Universal fits 12-24V vehicles like trucks, trailers, RV, campers(Note: Please install on a smooth surface) UPGRADE 6LED: Hight Brightness, each upgrade marker light is built in 6 diodes. Output ultra-bright amber light which reflecting clearly lights around in the dark to warn the upcoming car to reduce accidental ricks; Low power consumption, and durable EASY INSTALLATION: Two-wire design which comes out from the center of the light including both lead wire and ground wire for easy to mount to all surfaces and fixed by the screw on both sides; (Note: different color light: the light with yellow black wire, Black is Negative while Yellow is Positive) IP67 WATERPROOF: Sealed waterproof assemblies; IP67 Waterproof clearance light can be ready for a different kind of weather attack, dust, dirt snow, and other impacts of inclement weather, which alerts other vehicles to avoid accidents Specifications: Material: 6LED high-brightness lamp beads Color: red, amber, white Wide voltage: 12-24V Package included: 4/10/20Pcs Side marker light