Grounding connector.. positioner or turntable.. you name it.

[Toolmaker51]

ingenious. This is one of those *why didn't I think of that* moments.

We ALL have those "why didn't I..." moments.
As Frank S describes thinking outside the box, is less inventive than picturing that box as a sphere; with infinite points of reference.
When I watched Tuomas assemble the ground connector, I saw it applying design of the 'banjo fitting' for fluid transfer.

There's no intention to promote my incredible mental prowess. It does not exist; the substitute is to recognize how something connects elsewhere.