Wiper intermittent function not working

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Wiper intermittent function not working. Slow speed works. High speed works but not much faster than the slow speed. When you turn the wiper off it will stop without in the middle without reaching all the way to where it should stop. If you pull the arm up it will move a little and so on. I changed the wiper motor, did not work. I changed the wiper signal stick (connected to the steering wheel), did not work. Fuses and were checked. Hope anyone who had similar issue shares their insights.