Connect pin 30 (blue wire) to battery power source. Solution is to connect a relay between the power source and the camera.Īt first, you should know what a relay is, how does it look like, here’s a picture for your reference: If you have a multi-meter, you can also measure the voltage from your car reverse light. This is a common issue especially for some old cars. If your car can not provide stable 12V voltage from reverse light to the camera, then the camera display will be no signal, or flickering. So that the camera can get 12V power from your reverse light. Because the car rear view camera should be powered with 12V car reverse light. This is most probably the voltage from your car reverse light is not stable, so it can not provide stable 12V voltage to the camera. When you are installing an aftermarket head unit upgrade with a car reverse camera, the rear view image on the display may be no signal, flickering, or a similar issue.
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