The Tekonsha 3064-P 2-Plug Wiring Harness is designed for brake controls that have a wiring port built into the back of the unit. Simply plug the brake control end of the wiring harness into the back of the brake control and the vehicle end into the automobile's port. Brake controls that utilize the 2-plug style of wiring harness will be identified with the Plug & Play logo. • Plug & Play brake control wiring adapter• Designed for brake controls that have a wiring port built into the back of the unit• Simple to install• No splicing neededVehicle Compatibility2019 Chevy Silverado 15002019 GMC Sierra 15002020 Chevy Silverado 1500 / 2500 HD / 3500 HD2020 GMC Sierra 1500 / 2500 HD / 3500 HD Simple installation with no splicing needed Fits 2019-2020 Chevy Silverado & GMC Sierra | Tekonsha 3064-P 2-Plug Wiring Harness for Chevy Silverado and GMC Sierra