3 frankly disappointed

I chose this model after reading reviews of different buyers on several models. I wanted a screen of 4.3 "so as not to clutter up my dashboard. Upon receiving the kit both visually is what I wanted, a little bulky camera anyway. I followed the advice on the website and read made a montage "blank". Nothing lights. Like the first review, I reversed the polarity on the camera and on the monitor ... Nothing lights. Plus, who found an effect "mirror"? Not me anyway. Have I received the good monitor? The monitor and camera come in different packaging, which does not prevent compatibility, but what was delivered only works in no case. Records simplistic but clear, though all in English, which is "off-the-law" in France. At the rear of the monitor are three small buttons, nothing said about them in the record no reaction when handling it all ... I return at Amazon. Thanks to him for his friendliness in this case. In the end I am "empty-handed" and frankly disappointed.