Ensure your vehicle is Ready for the Road Ahead with reactive brakes, with the Dexter 12-1/4" Electric Brake Magnet Kit - Red Wire. This replacement part allows vehicles to more efficiently actuate their brakes, thanks to the friction the magnet creates when contacting the face of the brake drum. Once installed, this device moves the actuating arm, and exerts outward force to bring the brakes to a rapid halt. FleetPride is your First Click in Heavy Duty .