As of the other day, the windshield wipers on my '00 Civic DX will not
shut off unless I turn the car off.  When in the OFF, INT and normal
positions, the wipers work as if they were set to the normal speed.
But they do switch to the high speed when moved to that position.

As a temporary measure, I just removed the cover from the steering
column and unplugged the wires going to the wiper control unit (or
whatever you call it).

Apparently, this isn't an entirely uncommon issue with Civics, but I
haven't found a universal fix for it yet, just a lot of different
opinions.  Can anyone offer some insight?

Thanks in advance.