Mystery Plugs Under Rear Seat

[X Foomph]

Last weekend I had to remove my rear seat in order to clean up a small mess which had dripped down between the seat belt receiver and seat cushion(see below). Upon seat removal I noticed several electrical plugs on top of the fuel tank. I recognised one being the Bluetooth ULF plug. Could someone please tell me what the others are for? Is the large one maybe intended for the DSP?
Thanks in advance

So I'm coming back home after picking up some KFC, this included a small tub of gravy. You know that not real thick, sought of nice n runny type gravy. Bit too much grunt on one of the right handers and wooshka, the tub of gravy goes south minus the flimsy lid. Problem is that I only realised this after I got back home and saw what little remained of aforementioned gravy seeping nicely down around the seatbelt receiver. Don't ya hate it when shit happens!!!