Mystery wires

I have noticed that there is a yellow wire in the right rear fuse bay,
trunk behind panel, that is separated. It has a male and female spade
connector as though it should be connected. Everything “seems” to be
working okay but I wonder what it is for. I am hesitant to just connect
them, (smoke-a-phobia) and wondered if anyone knows what they are for. They
disappear into the loom wraps and I cannot see where they go.

Any ideas?