Will a Durametric read

[Muzzle of Bees]

anything related to the wiper interval?

Here is the list of things that have been done to try and remedy my wiper interval problem.
With Woody helping.
1. Switched relay. Two different ones.
2. Switched the knob. Two different ones.
3. Tested a second wiper motor.
The interval still only works at about the 30 second interval, no others work.
I guess perhaps its either the ECU or the stalk at this point?