To locate the wiring of a backup camera, follow these steps: 01. Consult the vehicle's manual to determine the recommended installation location. 02. First, identify the camera's connection point on the vehicle's rear. 03. Then Trace the camera's wiring from the connection point to the vehicle's interior. 04. Next, remove interior panels if necessary to access the wiring. 05. Use a wire tracker or multimeter to identify the camera's wiring among the vehicle's harnesses.