I had my wipers stop working ( would not come on, stop in the middle of window and not shut off.) Upon further inspection of the circuit board, i found about 6 places the the solder joints were broken. (see picture) re-soldered them up and I'm good to go.

 

Glad you got it fixed for next to nothing in terms of $$.

Here's an article that I wrote a long time ago:
Fix for cold solders in the Wiper Motor