Genssi Red LED 1156 7506 18 SMD LED Bulbs Signal Tail Brake Bulb (Pack of 2) 1156 LED Bulbs are designed to replace your regular bulb with a RED LED that lasts 10x longer, gives less heat and provides a more Red color you can notice right away; Did you know its best to put a red bulb behind a red lense for maximum brightness 1156 Bulbs are single filament by nature, this means there is On / Off only; One tab on the bottom of the bulb is the positive and the body is the ground 18 x 5050 SMD LED Per Bulb ; Superior Genssi quality and unmatched optics; Did you know Red LED behind Red lens gives best output; Do not install white behind Red lens 1156 is same as 7506 BA20 Socket; Superior brightness and quality Pack of 2