Wiper motor and washer not working

I need some guidance on testing the wiper motor, washer motor and both switches. I'm VERY ignorant on electricals, so please dumb it down for me. I have a multi-meter, but limited knowledge on how to use it. The problem is as simple as, flip the switch, nothing happens. I don't know if the problem is the motor or the switch. The wiper and washer each have their own seperate switches. Both motors are well grounded to the body. The car is a 1967 Plymouth Fury. Thanks for any help you can throw me.
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