Disconnected cable (?)

Car model: Peugeot 308 Hatchback

Hi all,

Just a quick query that concerned me slightly just this morning today. I noticed that some sort of cable had come loose and was just dangling above the pedals (god knows how long it must have been disconnected for!) but I have absolutely no idea where it was connected to? The image should be attached.

Can somebody help me please?


Thanks.