Check the listing for details. CURT BRAKE CONTROL HARNESS 51343 GMC CADILLAC CHEV. Condition: New. Listed at 10.00 USD. This CURT Brake Control Harness 51343 is a must-have for anyone looking to upgrade their trailer brake controller. Designed for use with GMC, Cadillac, and Chevrolet vehicles, this harness is easy to install and will provide you with reliable performance for years to come. Made in Mexico, this harness is built to last and is sure to meet your towing needs. Whether you're hauling a boat, trailer, or other heavy load, this CURT Brake Control Harness 51343 will help you stay safe on the road. With its high-quality construction and easy installation, you can trust that this harness will get the job done without any fuss. So don't wait any longer, order yours today and experience the peace of mind that comes with knowing your trailer brakes are working properly.