Product Info Catalog Automotive Trailer & Towing Trailer Products Trailer Connector Light Plug, 2-Prong Trailer Connector Light Plug, 2-Prong Request a Quote UPC: 805089900018 SKU: 187111 Model Number: UE999001 Trailer light plug, use for trailer lights requiring a 2 prong circuit, used for 12v dc circuits only when on/off only are needed.