2 pcs kit
LED stands for "Light-emitting-diode", it is a semiconductor device with two terminals, typically it only allows current to flow in one direction, therefore they are polarity specific. Unlike incandescent bulbs that are used on most vehicles, LED's do not have a filament that produces both heat and light, instead it has electrons that flow to create photons, which generate very low heat. LED's use much less energy to create an increased amount of brightness compared to incandescent lights, and last longer.
TheLEDstation LED License Plate Light Kit for 2000-2004 Toyota Tundra Extended Cab are a direct replacement for your OE incandescent bulbs. OE incandescent bulbs are usually orange/yellow in color, it generates excess amount of heat when turned on for an extended period of time, versus its LED counter part that has a vibrant white color, produce less heat and draw less power than incandescent bulbs.
LEDs are polarity specific, if it does not come on after install, please reverse the polarity by turning the bulb around.