Pump is in the washer bottle. On pass side near firewall it is screwed to the wheel well. You will need to remove the screws so that you get the washer bottle up so you can get to the pump. The connecter that is easy to see & reach is the float level not the pump-pump is farther back & lower toward firewall. Once you get to it remove connecter & twist counter-clck-wise to remove, Not hard just a pain to get to.
The windshield wiper relay is located in the electrical power distribution center.
The 2002 Dodge Dakota takes 21" replacement windshield wiper blades on both sides front.
in a fuse block
The wiper linkage is bad. Or the wiper arm stud bushings (where the arms attach to the cowl) are rotted out.
Remove the windshield wiper arm from the windshield wiper motor. Remove the wiring harness. Remove the retaining nut. Reverse the process to install the new windshield wiper motor.
All 2004 Dodge Dakotas take 21" replacement windshield wiper blades on both sides front.
Linkage bushings on wiper arms coming off back side of wiper motor under cowling
read the instructions that came with the new wiper blades
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The front windshield wiper size on a Dodge Caravan is 26 inches for both driver and passenger. The rear windshield blad is 16 inches.
A Dodge Dakota does not have a rear washer fluid reservoir. On most newer vehicles the washer fluid for the rear windshield comes from the washer fluid reservoir from under the hood. If you are not getting wahser fluid to the rear windshield it could be that the line is frozen or clogged with dirt or the line could be disconnected somewhere.
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.