Looking for the ultimate lighting kit for your GMC HD? Look no further! The 30in S8 kit with backlighting is the kit for you, it includes everything you need, the light, wiring harness, and mounts. This kit is perfectly concealed behind the grille, and mounting the light does not require any drilling or modifications to your vehicle. Baja Designs Features:uService – Replaceable Lenses And OpticsClearView – All The Light, Right Where You Need It.MoistureBlock – Waterproof, Rain Proof, SubmersibleCopperDrive – Only LED Driven At 100 percent5000K Daylight – Less Driver Fatigue, Natural ColorSpecifications:Lumens: 18,984 Utilizing 24 Cree LEDsWattage/Amps: 168W / 12.17ADimensions: 30in x 3in x 1.6inWeight: 6.5 lbsLED Life Expectancy: 49,930 HoursFront Lens: Hard Coated PolycarbonateHousing: Aircraft Grade Aluminum w/Mil-Spec Hard AnodizeBezel: Billet Machined AluminumHardware and Bracket Material: Stainless SteelExceeds MIL-STD810G, Mil-Spec TestingBuilt-In Overvoltage ProtectionIP69K, Waterproof up to 9ft and Pressure WashableIK10 Compliant, Mechanical Impact TestingS8 Patent D780,964Kit Includes:S8 30in Driving ComboWiringHardwareBracketsApplication:Sierra HD SLESierra HD SLTSierra HD All Terrain