Here is an update...first of all, the enclosed diagram is what I got from Ford.
On pin 13 of the Wiper Control Module is the following - In a nutshell pin 13 does not go to zero volts when the wipers are turned off while the engine is on....but does go to zero volts when in ACC mode which it should.
On ACC Mode
Wipers in Off mode - O-volts
Intermittent - cycles 10-volts (Wipers on) to about .2 volts (wipers off)
In Run Mode
Wipers in Off mode - Initially 0-volts
Intermittent - cycles as above
Turning wipers off - does not go to 0-volts (as it should) - stays at about 12volts.
Wipers and Control module.pdf
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