It might help to check a few fuses to see if the element is blown, fuses don't typically back out of their spots when they blow and open the circuit..
I could be wrong, but there are fuses in both junction blocks, under the hood and the dash one -
I believe F56 is the underhood one, and F20 and F 6 are located in the passenger fuse panel
Not sure if the wiper is tied into either of these fuses, though - It could be a coincidence
Also, yeah - check for loose connections near the cabin air filter, as noted above..