I can have them turned off and move to the intermittent setting, but they don't move. If I move them up to the medium speed setting they'll work fine. Is there something I'm doing wrong here?

 

Almost sounds like it's in the switch but I haven't pulled up the wiring diagram (assuming there IS one for the wiper circuit). I'll take a look since I have a few minutes and then edit.

Edit: http://iihs.net/fsm/?dir=40&viewfile...%20Washers.pdf

I'm still thinking the INT portion of the switch (or the 61 and/or 58 leads) w/o putting a lot of thought into it. Hopefully 157db will see this thread and comment. The guy's a wizard at this stuff.

 

OK, I just noticed you have an '06. Have you checked the SJB for any signs of corrosion on the terminals? The water leak TSB comes to mind here. I certainly hope it's just the switch...