Should have flipped em up and just rocked em like that. I remember my high school days it was cool to poke your wipers out and ride around. Don't ask me why...
for pranks kids would flip up peoples wipers so they would have to flip em down so they dont look like retards leaving the parking lot
I tell you another trick I had learned way back in the 90's I had a old dodge company truck and the wipers quit on me (we were out of town working trying to get home) and it was raining like pouring piss out if a boot....well the wipers died fuses were good and we were out in the middle of nowhere....so I pulled under a abandoned gas station roof and dried off the windshield real good. I had half of a 20oz coke and I poured it all over the windshield. Man that stuff works great for water repellant
Check for good ground connection at wiper motor, it needs this to "park" the wipers. It may be the all in wonder wiper control stalk. Good Luck RRogers. This is from my Haynes manual for 1999-2002 F250
Found this info in a search: "FORD F350 1999 car safety problem was reported on Apr 15, 1999. FORD F350 1999, manufactured by FORD MOTOR COMPANY had a problem with VISIBILITY:WINDSHIELD WIPER/WASHER . WINDSHIELD WIPERS OFTEN WON'T TURN OFF. AT TIMES I HAVE TO PULL THE FUSS TO STOP THE WIPERS, AND REPLACE THE FUSS TO START THEM AGAIN. I HAD IT IN TO THE DEALER TWO TIMES, THEY FIRST REPLACED THE WIPER MOTOR, THIS DID NOT FIX IT, SO THE NEXT TRIP IN, THEY REPLACE THE SWITCH, THIS HAS NOT FIXED IT.." ******* The wipers are controlled by a GEM (Generic Electronic Module), there is also a wiper run relay module and a wiper park relay module. One suggestion was to reset the computer (PCM) by disconnecting the battery for 5-10 minutes. I'm not sure what mods have been done to the PCM when you had the supercharger installed, and if resetting the PCM (computer) will or will not have an effect on the "tune" of your truck. If your not afraid to try the disconnecting the battery method, to reset the PCM and in turn the GEM which controls the wiper relays, you could try that. Not much faith in the above quoted customer statement that the "dealer" replacing the motor and the switch didn't fix the wiper problem. Ford dealership workers, that doesn't mean they can fix all problems. I used to work "Trim Line" at a local Chattanooga Ford dealership and I've seen first hand some of what goes on behind closed garage doors.