looks too blurry to me, does it have a 3 prong connnection?
It appears to be a triangular on the connection end, round on the opposite end and has the possibility of a maximum of three connection points.
Wire is a small gauge, if it wasn't wrapped in the OEM black cloth tape I'd venture a guess of an audio connection.
OP, it looks like it goes through the firewall behind the glove box, see if you can find it under the hood and follow it.