R to @BritishLadyA: So not fixed but at l3ast

you need to specify the src of the video file

So not fixed but at l3ast closed. But I was right about the problem. I can now go and source the metal cable needed.
It had corroded and snapped. So instead of new window regulators is just 2 new cables. I will ask for a quote but won’t be £800 now!