Electric buzzing under dash, what could it be?

Leo, what the first video it sounds like a relay that may be causing your problem, check out our https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit See if you can localize where the clicking is coming from. I see that when you turn your lights on and off it may be because of that relay. The best thing is to check all of them. Hope you get it figured out, if you need more help we are here to help.

Mike