no pics of the backside.........they are installed already
but, it looks the same as the stock backing
as far as the projector........think of it looking like a turkey leg
basically the projector is big on the top and has a little stalk that slides into the hole left in the headlight where the bulb is/was........then it has a locking ring to hold it in place
did you see the set of quad projectors for sale here???