All the internals of the stock tail light are replaced with a Custom LED circuit board containing 52 Ultra Bright Red LEDs and 44 Ultra Bright Yellow LEDs - compared to only 12 red LEDs on the stock circuit board! Just as on the other models, the system is designed so that the red LEDs turn off (on one side) when the yellow comes on so that the turn indication is a pure yellow light. The unit automatically flashes between the red and yellow on the side you're turning! The Yellow LEDs are slightly offset as well, creating a dramatic attention grabbing effect.The engineering is solid and dependable, the looks are unbeatable, and the brightness is incredible! Don't waste your time with half hearted solutions, do it the right way from the start, with Custom LED.It is very hard to photograph these LED tails because of how intense the light is. The pictures above have been slightly altered to achieve a more realistic depiction of the actual appearance of the tail in person. Please note that the actual distribution of light is uniform, and not blotchy as it appears in the animation above. Rest assured that actual performance is outstanding, bright, and precise.