Would someone help me identify what this control does / did?

It's dash mounted left of the steering column on my '66.

It has some electronics on a board tucked under the dash, couldn't get a picture of those.

Some wires look like they used to go to the turn signal on the steering column? The other wires have been cut as you can see in the photo and the other ends of the cut wires end on the other side of the firewall - they don't go anywhere so I can't trace them.