Vehicle Battery Query

Hi all. I've recently had cause to replace the vehicle (NOT leisure) battery of my Elddis Accordo 125 (2015) - based on Peugeot Boxer. The + terminal is the usual Boxer distribution panel, but there seem to be two other wires floating free in the battery box, not attached to anything (one has an unusual connector plug on it, the other is just a single black wire with a ring terminal - see photo). Anyone know what these are for and what (if anything) I need to do with them? I can't see anything obvious they would attach to. Any guidance appreciated. Many thanks, Pete B.