Each 7440 or 7443 LED bulb equips with 15 LED light; 9 LED aim out to the end and 6 LED aim 90 degrees from the baseEmit Red color light, long lasting lifeBulb is transparent clearEasy Plug & Play installation; Quick instant Start-Up timeShock & vibration Resistant and instant on/off response timeIt works at ~12VPlease try to reverse the polarity of the LED light if you found that the LED light is not working properly after installation***If you are using these LED light bulbs to replace the Turn Signal light, Tail brake Stop light, Parking/Running light; depending on your vehicle electric circuit, you may need to add a pair of load resistors to prevent hyper/error flashing or malfunction problem Cross Reference for this 7440 or 7443 LED light bulb:7440 (single filament): 992 992A T207443 (dual filament): 7441 7444