I have a 2007 DTS and removed the back seat so I could check a fuse. But, when I was trying to put the seat back in place, I couldn't find where to plug the cable that's hooked to the bottom of the seat??
That's for your heat in the lower cushion. I am trying to recall what the plug looks like but cannot. If you can wait I will pop mine out Saturday and get you a picture if that would help. You could just leave it unplugged for now.