Partsam 10 Pcs Red & 10 Pcs Amber 3/4 Inch Mount LED Bullet Light Lamp Clearance Truck Trailer Round Side Marker w/Plugs / Connector Ends (Total of 20 Pcs) Partsam ( 10Red + 10Amber) 12V 3/4" Round Bullet Mini Grommet Side Marker Light; 150 lumen each light with 1 PC High Quality SMD LED Inside of the Lamp Offer Extreme Bright light. Waterproof PC Lens,Shock Proof ,Dust Proof ,Rubber Cover Sealed Light. "3/4 "" holes needs to be drilled to accomadate the grommet & light; Easy to install by two bullet ends with FREE High Quality Rubber Cover, No crack forever; Different form many of those 3/4 inch ones with free ends wires on market; Regarding to the wire ends, you can ground One end to the trailer frame and the other to the constant; Black positive white negative Universal All Cars Trailer Clearance Bus Van Caravan Boat Lorry Truck. Easy to install in all locations : Side Front Rear Undercarriage As Exterior Safety Signal Light At Night resistors are not built in; Just wire them direct. The only time you need a resistor is when their used as a turn signal or flasher. You can overcome using a resistor if you change out your vehicle flasher. 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.