Hi, I have recently purchased the unit D5114c and I am having problems with my wireless reversing camera. I have connected the power main to my cigarette lighter and the reversing light. I have connected the wire to, (your diagram, wire 17) back sight video in. However this does not work. The camera works when connected to the aux cable (18), when in video mode, however this is pretty useless as the time you sort all that out it takes a lot longer than just reversing. Do you know how to rectify this problem? And what is cable 6 (back car control) used for? Has this anything to do with my problem?