My steering column has never felt right. ...
Looks pretty grungy in there. No wonder it didn't feel right. I wonder if the old upper bearing just disintegrated over time? Might be part of the grit that's in there now.
Here's our page of available original style parts:
https://www.wildhorses4x4.com/category/Bronco_Stock_Column_Parts
Starting at the third row are the basic bits and pieces. Bearings look like something out of your old bicycle, but that's what they used.
Pull the shaft, clean it all out, and put some of the new stuff in there.
What's it look like down near the bottom? Does it have the bearing, sealing washer (felt washer) and clamp (#2279)?
The felt washer thingy is typically the first to go, the dirt and grit work their way up, and things just do downhill from there. But hey, the did last 40 years in some environments. Others were worn out at 10 years, but lots of variables in-between.
Maybe the PO used the steering wheel to haul themselves up into the cabin? That's a guaranteed early death for most older steering columns. And some modern ones as well...
Now seems the time to pull it apart, clean it up, smooth the shaft and paint it up, then put it all back together with new parts.
Not sure what's causing the turn signal cams to break so quickly, but a good bet would be a combination of cold weather and cheap Chinese parts.
That'll get them cancelling cams every time...%)
Paul