(1) Connect the red wires of the reversing camera to the power supply of the car's reversing lights positive, black wires of the reversing camera to the power supply of the car's reversing lights negative. (red is positive, black is negative) (2) Then plug the video interface (yellow) of the reversing camera into the "R-CAM" port on the back of the car stereo, there is a small red wire next to the video interface connected to the "BACK CAR CONTROL" (pink) of the stereo harness. If you are still unable to resolve the installation issue of the reversing camera, please take photos or videos of the problem and consult a professional or email us for feedback on the issue, so we can assist in resolving it.