1999-2006 GMC Sierra LED Rear Brake / Blinker Upgrade Kit: Looking for upgraded LED Rear Brake / Blinker Light Kit from a reputable brand and value the fact that we've actually tested them on your truck? Our HR Tested kits include all the right components to ensure perfect fit, function, and performance from the upgrade. At Headlight Revolution, we do 1999-2006 GMC Sierra LED lighting upgrades better!

1999-2006 GMC Sierra Rear Brake/Blinker Upgrade Kit: Bright LED instant on and off function to increase visibility and safety with a modern look.:

Kit Includes: 2 X Plug and play direct fitment 3156/3157 LED Bulbs, Designed to fit perfectly in your Sierra - Amber OR Red depending on what is currently in your truck. Be sure to select the correct color to match your current incandescent bulb. 1 X GTR Lighting 50 watt 6 ohm Gold Style Resistor Kit. GTR Lighting 50 watt 6 ohm Gold Style Resistors, for Custom Installation.

When installing: LED bulbs to replace your factory blinker bulbs, you will have a "fast flash" or "hyperflash" problem. This means the vehicle will think you have a light bulb burnt out and, as an indicator to you, will flash quicker than normal. Installing these resistors will fool your vehicle into thinking it has a light bulb in good condition installed and will blink normally. Simply wire the resistor between the ground wire and the blinking positive wire. When installing LED xenon lighting in some vehicles it will not work properly because the vehicle uses a CANBUS monitoring system. It sees the LED ballast instead of a regular halogen bulb and thinks there is a problem. Some cars or trucks will give a light-out warning indicator light on the dash, others will simply not supply headlight voltage, or flicker the headlight voltage. Installing this universal resistor kit with your LED kit will fool your vehicle into thinking it has a normally functioning halogen headlight in place. Simply wire the resistor between the ground wire and positive wire for the headlight bulb.

WARNING!: The resistors get hot! It is very important to mount them to something metal behind the headlights with screws, not zip ties. The resistors get so hot they can melt some light plastic and short wires. Keep them away from all wiring and heat sensitive materials!

HR Tested: Here at Headlight Revolution, we've spent the time to install and test all HR Tested products, so we know it'll work exactly as shown and right out of the box! Not only that, but we don't favor one particular brand. We just deliver the best product for the application, period. Be sure to reference our install videos for helpful tips on making the installation process quick, painless, and clear. HR Tested: We ensure fitment and function. You do the install. For other compatible upgrades, use the Buyers Guide on our homepage!