Disabling backup camera on Mazda CX5?

Does anyone know how you can either turn off just the back up camera display or even the whole display inside? Car is a 2017 Mazda cx5. Also, before people just comment why would you want to do that its required. My car is being used for a read test and backup cameras must be disabled. I just cannot figure out how... show more Does anyone know how you can either turn off just the back up camera display or even the whole display inside? Car is a 2017 Mazda cx5.

Also, before people just comment why would you want to do that its required. My car is being used for a read test and backup cameras must be disabled. I just cannot figure out how to do it.
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