Of course I found this thread after I repaired mine!
The picture of your module with the red square was exactly what mine looked like.
Wipers would work on high and low but would not park or work on intermittent.
I soldered a piece of thin gauge buss wire from terminal to terminal to bypass that section.
For anyone reading this writeup - Just don't make the same mistake I made when testing it.
I decided to install and test the bare board before I put the box back together.
Good idea except it was dark out and I installed using a flashlight.
I didn't notice that the inside of the connectors were not divided between the slots so two of the long flat board pins contacted each other inside the connector.
It popped the buss wire right off it when I turned the ignition on.
After the re-repair and installation with the housing I had park but never got intermittent out of it again. Not sure if I zorched the component that controls the timing or if it was already shot before I messed up.
So put it back in the housing before you test it.
Happiness is clear in the cab and 150 over 150.