I have a "group buy" camera too. Before I install, I was anxiously awaiting to hear WormGod's impressions. (My concern is related to the fact that the camera circumference is nearly 25% larger than the factory opening in the crescent; I'm not crazy about cutting the crescent.)

Currently I have fashioned a temporary mount for my camera inside the rear window, hooked it up to a small Citizen 2" tv that I already have, and the picture was fine. No flickering of any sort and a pretty good picture. (Night vision was sorta bad b/c of glare, possibly caused by the window, or perhaps the too-numerous red lights on the camera. )

Could it be that the camera needs full exposure to deliver a clear image? Blocking part of the circular lens might be the cause of the flicker on/off image?? Just wondering.