The clicking you hear is the servo. It hould not be clicking at all. Take it off, and put it back on. It might have come loose.
As far as telling if it is working or not, light should be on, and the road should feel alot rougher. On my 90' there are no clicking, light comes on, and the road feels rougher.
Light is located on the dash, just to the right of the column. It should light up green. 94-95 it is in the middle of the dash at the bottom.