LED Universal Stud-mount Combination Tail Lights Red License Illuminator on Left Truck Trailer RV KL-25104 / 25104L 1 Pair Acrylic lens is screwed on to the housing Features chrome reflector inside the lens 12 red square LED (stop, turn and tail) and #1156 bulb (back-up) Red light w license illuminator on the left, w/o license illuminator on the right Operates from 9-16 volts