About AHD options Please check whether your car Android Player supports AHD camera! If AHD cannot be selected, AHD cameras are not supported! Go to Car settings >> Factory settings >> Reverse (picture) settings >> Select AHD * SUPPORT AHD VIDEO SIGNAL---This car rear view camera can work with AHD monitors only. it doesnot support CVBS monitors and it is not compatible with Car DVR / dash camera >>> our AHD Camera ( 2 Megapixels ), the picture quality is more clearer than other cameras * We compared the image quality of the two kinds of rear view cameras. Through these pictures, we can clearly see that the image quality is better than ordinary cameras. >> Two pieces Control Wires You can install the camera on the front or back of the car through these two control wires, add or cancel the parking reference line >> Cut White wire, camera will get mirror image >> Cut Green Wire, camera parking Reference line will be cancelled Fisheye Lens 170 View Angle : Real 170 wide viewing angle. the display looks like fisheye, glass lens, with a wide field of vision, dangerous blind spots are a thing of the past.