They are ball-and-socket connections and they are often very tight and difficult to separate, and even harder to connect since it's difficult to get good leverage on them while they are installed. What eventually worked for me was trial and error using a combination of prybar and long pliers.
Images of the wiper linkage for a Dodge Dakota are located in the service manual. It details where the linkage connects and how to perform maintenance on it.
The linkage bushing is located under the Crowl grill. Remove wipers and grill.
The wiper linkage is bad. Or the wiper arm stud bushings (where the arms attach to the cowl) are rotted out.
Linkage bushings on wiper arms coming off back side of wiper motor under cowling
remove the cowl & wiper arms (mark location of arms on the windshield). disconnect the battery, Disconnect wire connector at wiper motor & remove the 4 mounting bolts then remove the linkage from motor.
The 2002 Dodge Dakota takes 21" replacement windshield wiper blades on both sides front.
Its a dealership part
Under the hood, beneath the driver side wiper.
under the hood near the wipers
in a fuse block
The windshield wiper relay is located in the electrical power distribution center.
You have to remove the linkage from the wiper motor.