How to Install Trailer Wiring | Color Coded Diagrams Option C: Replacement Vehicle and Trailer Wiring. If the trailer plug wiring on your vehicle or trailer is damaged or not working correctly, you can replace the connector with a CURT splice-in plug or socket. Plugs (trailer side) and sockets (vehicle side) are available in the following formats and can be spliced in with just a few connectors. Browse Towing Electrical from CURT CURT empowers your towing adventures with a complete line of towing electrical products. From our trailer brake controllers to custom trailer wiring, the majority of our products are plug-and-play to eliminate the need for splicing, and all are built for long-lasting reliability. Curt Trailer Wiring Diagram | Free Wiring Diagram Collection of curt trailer wiring diagram. A wiring diagram is a simplified traditional photographic depiction of an electric circuit. It reveals the parts of the circuit as simplified forms, and also the power as well as signal links in between the devices. Wiring Diagram for the Curt 4 Pole to 7 Pole Adapter Wiring Diagram for the Curt 4 Pole to 7 Pole Adapter # C57674 And Wiring for Trailer Brakes Question: Please provide wiring diagram for C57674, the link showing the wiring directions on Curt Trailer Wiring Diagram Collection | Wiring Collection Curt Trailer Wiring Diagram Collection - Installing 7 Wire Trailer Plug Inspirational Best 7 Pin Trailer. 69 Lovely Installing 7 Wire Trailer Plug. Installing 7 Wire Trailer Plug Beautiful Wiring Diagram for A. 54 Best Trailer Wiring Installation Cost.