Ground wire goes where? Under dash?

On my 73 Swinger I have a wire EXACTLY like that, and it goes from one of the steering column bolts to the back of the cluster under a screw to the lower right of the speedo cable connection. (looking at the back of the cluster)
There was a condenser that mounted on the same screw for the OEM voltage regulator for the gauges.

I'll try and find a pic for you, but it IS a cluster ground wire.
The wiper switch requires a ground through the cluster also, so it HAS to be there or it will get it's ground through something else. (like your speedo cable) and that's not good.


I cropped this out of a video so it's not that good but it shows the screw where the ground is attached where the condenser mounts. (on my car anyway)