Most likely fuse(s). Could be the switch too but probably fuse.
A bad relay switch will cause the windshield wipers to not turn off. Replace the relay switch and the windshield wipers should turn off.
If the motor is turning, but the wipers are not moving, then you have a broken or disconnected linkage.
A bad fuse may be the cause of windshield wipers not working on a 1998 Lumina. The switch that activates the wiper motor is another possible cause for the wipers not working.
There are several things that can cause your windshield wipers not to work. The most common cause is a malfunctioning windshield wiper motor.
Windshield wipers not turning off is not a common problem in the 1997 Jeep Wrangler. Remove the windshield wiper fuse to turn them off.
Windshield wipers don't work
Fuse or windshield wiper motor.
Why are there windshield wipers inside the car?
The most common cause that windshield wipers stop working is a blown fuse. The windshield wiper motor may need to be changed is also common.
Replace the windshield wipers.
Problem with multifunction switch in steering column
Mary Anderson invented windshield wipers in 1903.