That thick hooked wire holding the Horn contact disk to the adapter is the turn signal canceling mechanism.

It is supposed to extend into the column a little bit. When the steering wheel rotates back to center it catches on the turn signal mechanism in the column and causes it to pop the turn signal lever back to center.

I haven't worked on a gm/chrysler tilt column in over 30 years so I did not remember if the chrysler version had the gm or chrysler horn mechanism.

Is your current column tilt?