Our Grote-Select 4-inch LED stop tail turn lights have a faster light-on response time than similar incandescent bulbs, which means a greater stopping alert distance. This helps prevent accidents and improve the visibility of your vehicles on the road. These lights use existing pigtails and wiring, so you can retrofit your vehicles without costly wiring upgrades. They also help prevent theft by mimicking the look of incandescent lighting, all while still using more effective and efficient LED technology to improve the life and decrease the current draw from the lights. Moisture intrusion is prevented with a hermetic lens-to-housing seal, helping to increase the life of the light even more.