Putting everything back together after some floorboard rust repairs, can't remember if this wire plugged into anything or not. Any idea?
Also, whats the little box for under the seat, is it an ABS thing?

Before pic, drivers side rear seat area 98 xj:

 

The plug is for the seatbelt warning light and the box is the airbag inertia sensor.

 

Thanks Dave, but -

The seatbelt wire has a different connector, and it's located up front. Not sure what this one is for. Maybe its for electronic seats which I don't have?
Also, the little box has a red and black wire coming out, through floor and out to both brakes. Sure this isn't an ABS thing?



Female seatbelt plug:


Female mystery wire:

 

Okay, maybe for power seats? That box in my WJ with the arrow on it is an inertia sensor. The wires terminate in it and don't go anywhere else. Are those ABS sensor wires connected to it or are they just in the same harness? My 2000 XJ doesn't have ABS anyway.

 

I'll probably just tuck that wire away, hopefully nothing blows up. Putting carpets back in tomorrow, finally!

I also just looked up the serial number on that box - "ABS acceleration switch"