Aftermarket Radio

Hi all, recently purchased the new aftermarket dash kit for the my lexus ct200h 2016 and I'm having some problems with installation and wiring for the backup camera. Lexus CT 200h Radio Replacement Upgrade with Aftermaket Navigation - Professional blog for car DVD GPS head units , this is link to it, although the one I bought is off ebay it has all the correct parts. For the installation the head unit, does someone have a picture of how the brackets should look on the radio? Because I believe my bracket placement is wrong if it does not fit. I also do not know how to install the stock amp to the head unit it's pretty much just laying on top right now, do you use the stock part from the stock radio or? And for the backup camera all i have labeled is the rear wire and I wired it together to the red positive wire but if i keep that wired together it blacks my screen. Does anyone know which wires need to be together for the wireless transmitter for my rear view camera to my head unit because I got so frustrated I just started putting wires together and had to go buy a new 7.5 mini fuse because it blew. Help please I have a car in only name right now because the rest of it looks like it got robbed.