Yea i agree it looks like maybe the person taking the picture or some other obstruction is casting a shadow, giving it the dark parts, but the rest is in direct sunlight
its pretty easy to wire them, just buy a length of wire and a plug( both are for sale at home depot) strip both ends of the wire and attatch them to the light and the plug, you can secure the wire to the light with some electic tape. i did it in about 5 min.