Where does this go?

[Daarab]

Hi guys.
Swapped engines on a 1 9dci grand scenic last year, unfortunately I stuck clutch plate in wrong way, I started to strip it back down, but just didn't have time to do it, so now I've found a garage who has replaced clutch but because it was half stripped the os a wiring harness that they dont know where it goes. It's on near side. Also if someone could send a pic of the battery terminals that would be good.

Thanks in advance
Stu