When replacing the reverse camera on a new energy vehicle, the wiring process requires focusing on four core issues: circuit matching, correct polarity distinction, secure connections, and waterproofing. First, accurately connect the power wire to the reverse light power wire (usually red), strictly distinguishing between positive and negative terminals to avoid damaging the equipment. The video cable should be routed hidden along the original wiring harness and firmly plugged into the corresponding interface. The ground wire must be securely connected to the metal vehicle frame to stabilize the circuit. Wrap the connection points tightly with waterproof tape to prevent water ingress, and gently tug on the wires to check for loose plugs. If the camera includes a voltage step-down module, do not bypass it by connecting directly to the 12V power source; follow the power supply logic for voltage conversion. Some three-wire cameras require connecting the video wire, reverse detection wire, and ground wire accordingly to ensure automatic activation when reverse gear is engaged. Route the wires along interior trim gaps or the inside of weather stripping, securing them without hindering vehicle operation. When passing wires through metal holes, wrap them with insulating tape to prevent abrasion. After completion, engage reverse gear to test image clarity and stability. Only after confirming everything is correct should you reinstall the interior trim components, ensuring the system operates safely and efficiently.
The circuit layouts of different new energy vehicle models vary, so steps must be adjusted based on the actual vehicle situation before operating. For example, some models require removing the trunk interior trim, unplugging the original connectors, and then installing the new camera in the reverse order. If dealing with a five-wire camera, the function of each wire must be clarified; typically, the yellow wire is the video wire and needs to be connected to the vehicle's original video wire. Specific details should be referenced from the vehicle's repair manual or by consulting a professional technician to avoid mistakenly connecting to other circuits.
During the wiring process, tool preparation is equally critical. You need to prepare electrical tape, screwdrivers, trim removal tools, wire cutters, and a guide wire (fish tape) beforehand. Trim removal tools are used to carefully pry open interior panels, avoiding scratches on components. A guide wire can help route the wiring harness through the trunk's waterproof rubber grommets or interior gaps, ensuring the wires are hidden and not loose. If installing the camera at the license plate light position, you need to drill a precise hole first, embed the camera, route the harness along the trunk liner gap, and then pull it to the center console area using the guide wire, ensuring the wires are not exposed and subject to pinching or wear throughout the process.
Furthermore, the electrical systems of new energy vehicles place a higher emphasis on stability, so extra care must be taken to protect the insulation of the original wiring during connection. When stripping wires, use a dedicated wire stripper to avoid damaging the conductor core. When passing wires through metal holes, wrap the hole edges with insulating tape to prevent the wire sheath from being cut and causing a short circuit. For models with an integrated center console screen, carefully pry open the center console panel, locate the AV-IN interface, insert the video cable, and ensure the plug is fully engaged to prevent signal interruption while driving.
Finally, after completing all wiring and component restoration, conduct another comprehensive test: start the vehicle and engage reverse gear, observe whether the screen automatically displays a clear image and if there is any flickering or interference lines. Gently pull on each wire connection to confirm they are secure, and check that the waterproof tape is wrapped tightly. If you are unfamiliar with electrical work, it is strongly recommended to consult the brand's after-sales service or a professional technician first, ensuring every step complies with the vehicle's circuit specifications, so the reverse camera system truly becomes a safe and effective aid for new energy vehicle driving.
