My turn signal switch feels like it has broken on 1990 BMW 750iL

The steering wheel has been difficult to turn as if apiece has jammed inside the column. A sudden crank of the wheel has allowed the wheel to turn after what appears to have released whatever caused the jamming. The switch no longer clicks to normal position whithout overturning the wheel. Solutions pls?

Asked by for the 1990 BMW 750iL