Answer Use carb cleaner, with the engine running spray around the intake manifold if the engine RPM changes then you know the leak is there. Also spray all the vacuum lines in the same manner again if the RPM changes you found your leak. I have used this method for over 30 years.
The fuses for the wipers should be in the driver side engine compartment. the fuse box should be next to the intake. If you cant find the box;you can go to a local parts store and find a haynes book. it will have everthing you need for your saturn.