We introduce the world’s first double-sided festoon LED bulb that had LED lights on both sides for double the illumination and double the light output. This double-sided festoon is obviously much, much brighter than the conventional design, due to the sheer number of LEDs on the bulb. These 2-Way Shine DE3175 LED lights are specially designed so that it not only outputs light from the map/dome position, but it also reflects light back from the backing to make the light output even greater. If you’ve ever tried holding a flashlight directly into a mirror and have practically gotten blinded from the light shining back at you, the same concept applies here, except you won’t be blinded. Rather, you’ll probably marvel in awe at just how much brightness is emitted from your map/dome lights!