I have a 1997 light duty F-250. looks like a 150 with 7 lug wheels recently got the truck and the wipers do not work. there is no power to the motor on any setting of the switch. I have checked all fuses and they are ok. Are there any other controls for the wipers that I do not know about? Does anyone have any helpful hints? Any help appreciated.

 

There is a GEM module involved that controls the speed as well as other function in the cab.
It's mountrd on the dash fuse panel.
Look for signs of a windshield leak on that module.
Good luck.

 

Have two of these trucks and I changed the GEM module between the two and still no luck. The module out of this truck worked in the other truck and I still do not have wipers. I am puzzled I changed the wiper relays, the wiper switch in the steering column and the GEM and still no wipers. Does anyone know where the circuit gets power from?

 

maybe the wiper motor is just junk.. there must be a motor under the cowl? check that..