Solman15
This issue might be caused by insufficient power supply voltage, preventing the voltage signal from staying within the 12V range. Please check whether the red wire of the camera is properly connected to the positive terminal of the reverse light.
Check the trigger signal on the “Back” wire:
Use a multimeter to measure whether the “Back” wire receives a +12V signal when the car is in reverse gear. If not, please verify that the reverse light is receiving proper power supply.