【Multi functions】Triple lighting brightness functions, 10 LED Red outer ring for brake or running light and another 6 LEDs inner circle, amber beam for turn signal light. NOTE: This tail light is not compatible with the four-wire model at the rear of your vehicle (that is, the brake wire harness is shared with the turn signal wire) | 【Brightness & Safety】Each light use 16PCS quality LEDs to output excellent bright light. Also adopt specially designed polycarbonate lens to reflect back direct light, ensure a better visibility and safety at night | 【Ready For The Weather】 360° edge full coverage of rubber, not easy to fall off, protect taillights, completely sealed outlet, eliminating all possibility of moisture, IP67 waterproof rating, always be ready for different kinds of weather attack | 【Easy to Wire & Install】Just mount the grommet firstly on the pre-cut or existing holes, pop in the marker lights, and then connect to power to make it work,black wire- ground, red wire- break light, yellow wire- turn signal light, brown wire- running light | 【Wide Application】Work on 12V DC system, function as brake, running, turn signal light, tail light for all kinds of trucks, trailers, tractors, semi-trailer, horse trailer, travel trailer, dump truck, forklift, snowplow,excavator, RV, etc