About This For Chevy & Hummer: 2003-2006 Chevy Avalanche 1500,2003-2006 Chevy Avalanche 2500,2003-2006 Chevy Silverado 1500,2007 Chevy Silverado 1500 Classic,2003-2006 Chevy Silverado 1500 HD,2007 Chevy Silverado 1500 HD Classic,2003-2004 Chevy Silverado 2500,2003-2006 Chevy Silverado 2500 HD,2007 Chevy Silverado 2500 HD Classic,2003-2006 Chevy Silverado 3500,2007 Chevy Silverado 3500 Classic,2003-2006 Chevy Suburban 1500,2003-2006 Chevy Suburban 2500,2003-2006 Chevy Tahoe,2003-2006 Hummer H2. For GMC & Cadillac: 2003-2006 GMC Sierra 1500,2007 GMC Sierra 1500 Classic,2003-2006 GMC Sierra 1500 HD,2007 GMC Sierra 1500 HD Classic,2003-2004 GMC Sierra 2500,2003-2006 GMC Sierra 2500 HD,2007 GMC Sierra 2500 HD Classic,2003-2006 GMC Sierra 3500,2007 GMC Sierra 3500 Classic,2003-2006 GMC Yukon,2003-2006 GMC Yukon XL 1500,2003-2006 GMC Yukon XL 2500,2003-2006 Cadillac Escalade,2003-2006 Cadillac Escalade ESV,2003-2006 Cadillac Escalade EXT. OEM Design: Nilight headlight dimmer switch is manufactured to the OE specification to provide factory-fresh appearance, which features YELLOWISH LED indicator light symbols for easy operation at night. Easy Installation: OE connector helps ensure a solid, positive connection. 11 pins terminal connector for plug and play style. Just need to remove the defective parts and replace it, easy to install. Package Includes: A headlight dimmer switch. OE replacement number: 19381535, D1595G, 15194803, 1S8489, 1802-311218, 53-22773, 5322773, 180231121. Overview Operation Mode : OFF-NONE-ON Current Rating : 10 Amps Operating Voltage : 12 Volts Contact Type : Normally Open Connector Type : Plug In Brand : Nilight Switch Type : Dimmer Switch Terminal : Blade Material : Acrylonitrile Butadiene Styrene Item dimensions L x W x H : 4.17 x 3.31 x 4.1 inches