I found a wire under the passenger seat tucked behind the carpet join on the transmission tunnel side. It had a connector which was plugged into a blank block with a clip on it. Just curious as to what it is and what it could be plugged into. I already have electric heated seats, so can't be that. Should it be plugged in somewhere?

 2013 SD4 Auto HSE Luxury Firenze Red
2003 Defender 90 TD5 XS - gone.
2010 SD4 XS Auto - gone.