To install a rear view camera on the Chevrolet Cobalt rather than one of the plate backlights. Since there is a light bulb on the enclosure for the light bulb, it is possible to install it without loss of room lighting. The rear bumper shall be removed during the installation. You also need to properly connect the transaction:
The black wire sends a video signal to the monitor at the salon. The red wire signals the screen to switch to the camera mode when the reverse gear is turned on. The red wire and the black wire feed the camera. The red hook connects to the top of the back-turn lamp, black to the "mass".