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's 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. This brake controller adapter harness is designed to allow competitor brake controller harnesses to be used with CURT trailer brake controllers. It is compatible with Tekonsha, Reese, Draw-Tite, and Pro Series vehicle-specific harnesses.• Allows CURT brake controllers to be used with competitor harnesses• Compatible with Tekonsha, Reese, Draw-Tite, and Pro Series harnesses• Connects to any CURT brake controller (except Echo) Allows CURT brake controllers to be used with competitor harnesses Compatible with Tekonsha, Reese, Draw-Tite, & Pro Series harnesses Connects to any CURT brake controller (except Echo) | Curt 51520 Trailer Brake Controller Adapter Harness