Partsam 4pcs AMBER Square Clearance Side Marker Light Trailer RV w reflex refector, 2-4/5" Rectangular amber stud-mount Led marker lights Reflectorized Partsam (Pack4) Square Trailer Clearance and Side Marker Light with Reflex Reflector - Amber Features 2-wire, hard-wired design; The two-wire design includes the lead and ground wires to mount to any surface.; Easy to install, has mounting bolt centered on the back. Perfect replacement for original trailer side marker; 2-4/5" L x 2" W x 1-1/8" D; Reflectorized lens; corrosion resistant; mount on stud; 2-wire; 3 LEDs This square light can be used as a clearance light or side marker light with side reflex. functions as both a marker and clearance light when mounted properly; This amber lens is reflectorized, meaning that a separate reflector is not needed; Perfect replacement for original trailer side marker LED Marker lights for trailers; LED clearance lights; works great on my boat trailer and should be fine on a Motorhome; trailer running light replacement It all started in the summer of 2013 with a simple, with bold idea: make better auto parts. In other words, not just a better auto parts - a better way of doing things. A new kind of auto company that works hand in hand with users to do something amazing, something meaningful. Now PARTSam has grown tremendously to become one of the leading platforms of e-Commerce in the aftermarket auto parts industry. Inventory Management/Warehouse &amp; Fulfillment  With our warehouse located in Milpitas, California, we take care of the inventory management for our products. This saves manufacturers space, time, and headache. Automated Multi-Channel Sales  We successfully advertise our products on multiple platforms and maintain top-rated healthy seller accounts, which keep customers drawn to our products. We are continually expanding our customer base as we add more sales channels. Professional Seller - Customers will deal directly with us in regards to issues and concerns they experience with the products. Manufacturers will not have to deal directly with the individual customers, but will experience the benefits of their business, which is the typical win-win cooperation.