**BRIGHT AND CLEAR: Combriller 7443 7440 LED bulb is built with 36-SMD 2835 LED chips, delivering 360 degree full angle illumination with projector lens design, 300% Brighter than halogen bulbs, increased brightness makes you noticed when reversing/braking/turning around | **PLUG AND PLAY: Non-polarity design, this 7440 LED bulb is built with 1:1 same socket as halogen bulb, ensures a perfect electrical fit with your car, just remove the original bulb and install Combriller 7443 7440LED bulb, plug and play in 20 minutes. Fit for 7440 7443 T20 7441 W21W 7444 | **APPLICATION: replacement for Brake Lights, Turn Signal Lights, Reverse Back Up Lights, Tail Lights, Parking Lights, Side Marker Lights, Daytime Running Lights etc. Extra load resistor or flash relay might be needed to prevent the error code or hyper flash issue when replacement for Turn Signal Lights | **LONG LIFESPAN: built-in smart IC driver ensures constant current, output consistent brightness without radio interference, ensures a long lifespan to more than 50,000 hours | **NOTE: Different sockets on different vehicles require different size bulbs, Please confirm the bulb's size or check owner's manual to verify compatibility before purchase. Any problem, please feel free to contact us