Functional Structure:
Some high-end extension cables (such as 5‑pin cables), in addition to transmitting video signals, also incorporate independent positive and negative power wires to provide a stable 12V power supply. They are equipped with a braided metal shielding layer to reduce electromagnetic interference, ensuring that the image remains free of snow or delay over long distances (e.g., 8–10 meters or more).

Application Scenarios:
These cables are primarily used for installing streaming media rearview mirrors, replacing high-definition cameras, or retrofitting multi-channel monitoring systems on trucks. For vehicles that require dynamic trajectory lines, a dedicated extension cable with a signal trigger function must be selected; otherwise, the trajectory may not respond to steering wheel movement.