My wife came in the other night and was upset that her back up camera on her new car wasn't working. I looked out the living room window and our street lights were off, and it was one of the darkest nights I've ever seen. I said, "let me know how it works in the morning when the sun is up..." The next morning she was happy because it started working again. I said, "it's not broke, it just doesn't work in total darkness.."