If you mean completely turn off the wipers, put the wiper stick in the bottom position. You know you are at the bottom when one more push down manually sends the wipers across once. That way, if you get a few drops of rain on the windshield, you can occasionally manually clear the screen--this is helpful when driving really slowly. If you mean have the wipers go slowly, but not based on a rain sensor, put the stick two notches above the bottom position. I usually leave the stick in the position between those two--the rain sensing position--and i adjust the knob on the stick to change the time delay. Seems to work fine, except when driving really slowly.
