Tim Hunkin, who was behind the British show The Secret Life of Machines, is releasing a YouTube series called The Secret Life of Components, and episode six is about Connectors:

* https://www.youtube.com/watch?v=q43tZ6DjuIE

His channel (which also has the original Machines series available):

* https://www.youtube.com/c/timhunkin1/videos

* https://en.wikipedia.org/wiki/Tim_Hunkin