I would bet it's going to be the contacts inside the TSS stalk.
You can take it apart and clean them up.
I would unplug the harness at the bottom of the column first.
If the fuse still blows you don't have to pull the steering wheel off.
If so then try a jumper from the car harness to the directional harness one wire at a time.
Trace the wire that pops the fuse.
If you have an amp meter use that instead of the jumper to see which one has the high power.
Report the color of the wire with high current.