Does the camera get power? To check if the camera is working, connect it directly to a car battery.
If it works with the car battery, it is the power source in the trailer or power supply to the trailer that is the problem.
If it does not work, try pairing the camera again with the monitor. Don't forget to press the button on the back of the camera while the monitor is counting down.
Some newer car models do not recognize the camera and do not give it power or enough power. You can then insert a resistor, which makes the car detect the camera.
In some trailers it is not possible to use the interior lighting as a power source, instead we recommend to connect to the taillights.
If the above steps do not work, please contact us.