![backup camera](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
You must also plug reversing input cable into the car radio even if you dont connect the reversing camera, the two short wires can help boost the signal of Bluetooth and WiFi.
- Find the so-called "back" cable on the rear wiring of the radio, according to the label on the electrical diagram at the bottom of the machine.
- Line 1 and Line 5 connect to the positive pole of the power supply of the cars reversing light.
- Line 2 connect to the negative pole of the power supply of the cars reversing light.
- Therefore, when you pull the reverse gear, the device will automatically display the rear view image.