It's pretty easy to reset the windshield wiper arms. When you remove the wiper arms, use black tape on the glass to mark where the blade puts off the glass. You need to do this because when you reinstall the wiper arm, you may set it wrong. First off, remove the cover from the arm. Now, use a socket wrench to remove the nut that holds the arm on. Now, pull the wiper arm gently to put it off. Finally, install the new windshield wiper arm, tighten it up with a nut, and put the cap on the arm.