What go's there?
 

Hi, I am a Newbie in search of a little knowledge. Browsing this board there seems to be knowledge a plenty when it comes to Mercs.
I have recently acquired a 92 300E in need of a lot of TLC. I noticed something is missing under the rear seat left side. The bracket is still there and it mounted just in front of the control valve for the rear head rests.There are a bunch of wires that go to whatever it was. Two bigger plugs one with 10 wires the other has 12. Three smaller plugs two with 3 wires one with 6. I don't know if this is related or not but none of the windows work. Any help someone could give would be greatly Appreciated.