I bought this unit through sonic, as the price was more than 1/2 what I would have to pay here at home. the camera works great, but there were no proper instructions with it. The picture on my stereo when backing up was backwards, my installer nor I could figure out what was wrong. we called sonic and they had no clue either, they figured it may be wired wrong. I finally remembered that there was an extra wire at the end of the install wire of the camera behind the stereo that had a red button on it, so I took out my stereo and pushed it. that worked. it would have been nice if there were proper instructions with it to explain this.
I am glad I have this, great price and great camera. But needs proper instructions.