Whether you're a contractor on your way to the jobsite or just a casual fisherman heading to the boat landing, you need working trailer lights to tow safely and legally. For any towing setup, CURT offers quality wiring components, including complete wiring kits, circuit breakers, wiring connectors and more. CURT butt connectors provide a firm connection between wires and make the installation process simple. With their vinyl-insulated construction, they require no taping. These particular butt connectors fit 12-10 gauge wires, and the package includes 100 pieces.