What fuse moves the windshield wipers?

Question edited for clarity.
Question moved to correct year make model category.

Check the fuses and relays.

Ford Taurus (2000-2007) fuses and relays

https://fuse-box.info > ford > ford-taurus-2000-2007-fu...

2003 - Here you will find fuse box diagrams of Ford Taurus 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007, get information about the location of the fuse ...

2003 Ford Taurus fuse box diagram - StartMyCar

https://www.startmycar.com > Taurus > Fuse box
The 2003 Ford Taurus has 2 different fuse boxes: Passenger compartment fuse panel diagram. Power distribution box diagram. * Ford Taurus fuse box diagrams ...

Ford Taurus (1999 - 2007) - fuse box diagram - Auto Genius

https://www.autogenius.info > ford-taurus-1999-2007-f...
Jul 2, 2018 - Ford Taurus (1999 - 2007) - fuse box diagram. Year of production: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 ...

the wiper fuses / relays are in the top left of the fusebox

REMOVAL

1. Raise and support the hood.
2. Remove the windshield wiper pivot arms.
3. Remove the cowl top vent panels.

1. Disconnect the windshield wiper mounting arm and pivot shaft.

1. Remove the access cover from the dash panel.
2. Remove the mounting arm and pivot shaft retaining clip.
3. Disconnect the windshield wiper mounting arm and pivot shaft from the windshield wiper motor.

1. Remove the windshield wiper motor.

1. Disconnect the electrical connector.
2. Remove the three bolts.
3. Remove the windshield wiper motor.

INSTALLATION

1. Install the mounting arm and pivot shaft retaining clip on the windshield wiper mounting arm and pivot shaft.

1. Install the windshield wiper motor.

1. Place the windshield wiper motor in the dash panel.
2. Install the three retaining bolts.
3. Reconnect the electrical connector.

1. Reconnect the windshield wiper mounting arm and pivot shaft.

1. Press on the windshield wiper mounting arm and pivot shaft after it is aligned with the windshield wiper motor.
2. Install the access cover in the dash panel.

1. Install the cowl top vent panels.
2. Install the windshield wiper pivot arms.
3. Adjust the windshield wiper pivot arms.

This is technically for the V6 4.2L but I'm sure those Ford E250's have the same setup for windshield wiper motor. Let me know how it goes.

bent/broken wiper arms under the base of the windshield..remove the vent cover and service/replace broken parts.

You may want to remove the cover over the wiper nut and tighten it down. Make sure you don't exceed the torque settings. The nuts have a tendency to back off causing the wipers (or one wiper) to slip.

Most likely it is the motor, when it failed it likely blew the fuse. The washer pump is separate from the wiper motor. It is also possible that it is the switch.

Try replacing relay for wiper with another same relay from fuse block from another working accessory.Had same issue on friends Ford Ranger. Moved relays and cleaned harness connection at fuse block. Works fine.

2002 Ford F-250 Windshield Wiper Motor Removal & Installation 1. Turn the ignition switch to the ON position. Turn the ignition switch ON until the wiper blades are straight up, then turn the ignition switch OFF. 2. Disconnect the negative battery cable. 3. Remove the right-hand and left-hand windshield wiper arm and blade assemblies. 4. Remove the cowl top vent panels. 5. Detach the electrical hardness connector at the windshield wiper motor assembly. 6. Remove 3 wiper motor (module assembly) retaining bolts and remove the module assembly from the vehicle. 7. Remove the wiper linkage retaining bolt and remove the linkage from the wiper motor. 8. Remove 3 retaining nuts and remove the windshield wiper motor To install; 9. Place the windshield wiper motor in position and install 3 retaining nuts. Tighten to 10-12 ft. lbs. (12-17 Nm). 10. Connect the wiper linkage to the windshield wiper motor and install the retaining bolt. Tighten the bolts to 14 ft. lbs. (20 Nm). 11. Place the wiper motor (module assembly) in position and install 3 retaining bolts. Tighten the bolts to 6 ft. lbs. (9Nm). 12. Install the electrical hardness connector to the windshield wiper motor. 13. Connect the negative battery cable. 14. Allow the windshield wiper motor to cycle several times while checking for proper wiper motor operation. 15. Turn the windshield wiper motor to the OFF position to park the wiper motor in the park position. 16. Install the cowl top vent panels. 17. Install the wiper arm and blade assemblies. Install the retaining nuts and tighten to 22-29 ft. lbs. (30-40 Nm). 18. Connect the negative battery cable. 19. Check the windshield wiper motor for proper operation and the wiper arms for adjustment.

Check if u have power going to the motor first.If you have then your switch is faulty.

I have a 1996 Ford Taurus with a similar malfunction the intermittent wiper function is erratic, but the wipers park properly. I'm the original owner & this malfunction was in the car from the factory. I have a regular Ford Dealership manual & came to the conclusion that the Generic Electronic Module located behind the fuse panel is bad (computer glitch in programming) ! Ford Dealers want over $ 300.00 for a brand new module, I haven't checked with my local used auto parts recycler yet, but I know it will be less than the dealer price !