Are you worried about the frequent burning of your trailer marker light? The standard voltage of trailer and truck is 24v, however, according to our research, the output voltage of the truck battery can be 24-28v, that's one of the main reason why your side marker light get burned so quickly. 12-30V wide voltage range, our trailer light has super stable electrical performance. Even in the situation of unstable voltage, our led marker lights can still work well, if you want a reliable product, please give us an opportunity. Really extremely waterproof, our LED side marker lights have no seam. Another reason of the burning of LED trailer marker lights is the entering of water. Our LED marker light has perfect waterproof design, it can be used normally on torrential rain, keeping your safety in any situation A thicker ABS shell let this trailer lights be super durable Advanced LED technology lets the lifespan be up to 50,000 hours. With the high-end material, these side marker lights can resist shock, hit, water etc. Not like traditional halogen trailer marker lights, the lifespan of our side marker light can be 3 times than that of it. Specifications Color: Amber & Red Voltage: DC 12-30V Waterproof: IP67 Hole Distance: 2.32 Inch Product Size: 3.35x0.98x0.49 Inch Package Includes Trailer Marker Lights Amber * 2+ Red * 2 Elastic Rubber Gasket * 4 Screws and Nuts * 8