The CURT Quick-Plug Brake Controller Harness makes the installation of your brake controller a snap. It's designed to allow your brake controller to plug directly into your vehicle's power system using an original equipment connector. It comes equipped with two plugs â one that snaps into your vehicle's original equipment socket and the other that connects to a CURT brake controller. The CURT quick-plug harness installs with plug-and-play convenience to get you setup and on your way with time to spare. It includes 2' of wire and a slit loom sleeve to keep wires well protected and contained. This brake controller adapter harness is compatible with certain years (2003-2007) of the Cadillac Escalade, Escalade ESV, Escalade EXT, Hummer H2, Chevrolet Silverado, and GMC Sierra 1500, 1500HD, 1500 Classic, 1500HD Classic, 2500, 2500HD, 3500, 3500 Classic, Avalanche 1500, 2500, Suburban 1500, 2500, Tahoe, Yukon, Yukon XL 1500 and 2500.• Allows a CURT trailer brake controller to be plugged into OEM socket• Quick-plug harness installs with plug-and-play convenience• Wire colors match standard brake controller harnesses• Includes 24" of 12-gauge wire for flexible installation• Slit-loom sleeve keeps wires contained and protected Quick-plug harness installs with plug-and-play convenience Includes 2' of wire & a slit loom sleeve to keep wires well protected | Curt 51353 Brake Controller Harness, Select Cadillac, Chevrolet, GMC, Hummer