For Silverado/Sierra GMT800 High Mount Dual Row LED 3rd Brake/Cargo Light (Black Housing Clear Lens) For Models Originally Equipped with Cargo Lights Only (Non Cargo Light Model might Need Modification to Prevent Light Function Issue) 14" Length / Uses Existing Bolt Holes for Installation Lamp Type: Brake and Cargo Super Bring LED Light Compare to the OE Light / Low Power Consumption Brings a Different Appearance to Vehicle that Great for Show Use 1 X Third Brake Light 99-06 Chevrolet Silverado 1500/ 2500/ 3500 01-06 Chevrolet Silverado 1500/ 2500/ 3500 HD 2007 Chevrolet Silverado 1500/ 2500/ 3500 &amp; HD Classic 99-06 GMC Sierra 1500/ 2500/ 3500 01-06 GMC Sierra 1500/ 2500/ 3500 HD 2007 GMC Sierra 1500/ 2500/ 3500 &amp; HD Classic 5978318, 923240 Plug-n-Play Operation, Low Power Consumption Super Bright LED lights Compare to the OEM Halogen Brings a Different Appearance to Vehicle Thats Great for Show Use Uses Existing Bolt Holes for Installation 100% Brand New Professional Installation is Highly Recommended Installation Instruction is NOT Included Inspect back circuit board and wire connections Verify circuit board is protected from exposed metal and wires when installing in the vehicle Make sure the following wires are going to their correct locations. a. Black is Ground b. Red is Brake Light (+12v) c. White is Reverse Light (+12v) d. Yellow is Auxiliary or Running Light (+12v)