Diode Dynamics Switchback DRL LED Boards

Features Computer-designed LED boards for 2014-2015 GMC Sierra headlights. Two high power LEDs in place of each original white chip. A huge increase in brightness, even in direct sunlight. Adds brighter running light, and amber turn signal. Engineered and assembled in USA. Overview Time for an upgrade! From the factory, the GMC Sierra has LED accents in the headlight that illuminate in a white color, for the parking light and DRL. Diode Dynamics replacement LED boards add a brighter DRL and additional amber turn signal for a custom, yet functional look. Your order includes two sets of LED boards, one for each side of the vehicle.  Switchback. These LED boards are a direct replacement for the factory ones, but have double the number of LEDs. They illuminate white for your parking lights and DRLs, with a dimmed power level at night. Anytime you hit your turn signal, they light up in a brilliant amber that is even brighter to indicate signaling. While the amber is extremel