Our 2-Plug units are 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. Fits the following models: 2008-2017 Buick Enclave w/Factory 7-Way, 2009-2017 Chevrolet Traverse w/Factory 7-Way, 2007-2017 GMC Acadia w/Factory 7-Way, 2017 GMC Acadia Limited w/Factory 7-Way, 2007-2009 Saturn Outlook w/Factory 7-Way