The Blazer square incandescent trailer light kit is DOT complaint (FMVSS108/CMVSS) across USA and Canada for trailers under 80" wide. Ideal for use on utility, camping, snowmobile, and motorcycle trailers. The stop tail turn lights are each replaceable with model numbers B83 and B93. The bulbs are replaceable with the standard #1157 auto bulb. Side marker bulbs are also replaceable with standard #168 auto bulb. The kit includes 2 stop tail turn lights, 2 side markers, 20 ft. wire harness with 4-way flat connector, rustproof license plate bracket, mounting hardware and trilingual instructions- everything needed for easy installation and DOT compliance. Blazer Complete Trailer Lighting Kit for Trailers under 80 inches, C6423 Product Features: * Kit includes two square, incandescent stop/tail/turn (STT) lights, 2 incandescent marker lights, 20 foot of wiring harness, mounting hardware and license plate bracket * 4-prong wiring harness plugs into standard 4-prong plugs on towing vehicle/12V DC * This kit is designed for trailers that are under 80 inches wide * Replaceable side markers, lens and bulbs * Tri-lingual instructions and diagrams * Easy to install * Conforms to US FMVSS108 and Canadian CMVSS safety standards * Stud-mount installation - works on 2" centers which is standard in the trailer industry; 3.5 amp draw per light