Feature: 1. Versatile Use: Backup camera extension cable is the ideal solution if your 4Pin rearview camera line or dashboard camera line isn't long enough. Choose our extension cable to add the extra length you need and effortlessly tuck away the wiring neatly in corners. 2. Pure Copper Cord: This dashcam rearview extension cable uses pure copper with a diameter of 4.5mm (most original rear cameras have a 2.8mm wire). The thicker, shielded wire reduces signal loss due to extension, ensuring that your video clarity isn't compromised. 3. Includes Trigger Line: The 4Pin camera extension wire with the trigger line should be connected to the reversing light for power. If connected, the dashboard camera will display the rearview image in full screen while reversing. If a full screen display isn't required, you don't need to connect the red wire. 4. Wide Application: 4Pin rearview camera extension cable is widely used in trucks, trailers, buses, RVs, and long vehicles. It offers excellent EMI RFI interference protection, ideal for connecting parking assists and CCTV systems. 5. High Compatibility: Dashcam backup camera extension cable is compatible with professional CCTV, rearview camera, DVD player, and TV box. Enhance your driving safety and convenience with our extension cord. Specification: Item Type: Backup Camera Extension Cable Material: PVC Interface: M12 Aviation Plug 4 Pin Male to 4 Pin Female. Package List: 1 x Cable