I am installing a backup camera into my car the license plate light is blinding the camera at night time making it useless. I can’t figure out the name of the electronic component i need. There are two inputs and one output. A is the reverse light volt. (just used for signal). B is the license plate light. C is the output of the circuit.Normally A is off (when moving forward) so only B is detected and there is an output from C. When voltage is detected on input A, the circuit should cut power to output C.

-Thanks