wow thats a ugly sight. anyways what you could do is order a radio wiring adapter from nissan or a place like crutchfield.com and put your soldering skills to work.The came with the same color coding from factory so it shouldnt be too hard getting it back together. My guess is the radio was stolen a long time ago and the guy just put in a shit one to make it look like it was there when trying to sell. The bottom one is the clock wiring if im not mistaken.