LED Sequential Sidemarkers for 20-21 Sierra 2500/3500 HD Smoked Set Diode Dynamics GMC thanks to the plug-and-play design

thanks to the plug-and-play design that connects directly to your stock fog light connectors

while they look radical

and added an RGBW version to the family

the HP6 LED will provide far more light output than your original 41mm-sized bulb

Mercedes and others

LED Sequential Sidemarkers for 20-21 Sierra 2500/3500 HD Smoked Set Diode Dynamics GMC thanks to the plug-and-play designUpgraded Styling. These LED sidemarkers are a plug and play replacement for the factory fender lights, illuminating the entire width of the housing for a distinctive look and brighter appearance. Unique Startup. Both the standard and sequential models feature a unique startup sequence. Every time the sidemarkers turn on, they illuminate in an intense amber color starting from the center then spreading to either side. Once they are completely