1999 Crown Vic intermittant wiper failure

I have 1999 Ford Crown Vic. Never had a problem with wipers before this morning. Today, the “intermittent” function stopped working, only works on “full speed” and when I shut it off it does not park, stops wherever it happens to be. When I turn on the wipers (not full speed) there is an audible “click” that comes from the lower center dash. This also happens to be where the windshield wiper control module is located. I was wondering if that “click” points to the control module and not the signal/wiper/washer switch on the steering column as the problem? Though its probably not related, 160 miles ago I had the intake manifold replaced ($1100) because it was leaking all over the place.
Thanks in advance for any help