Wiper don't work at all 89 Dakota...just replaced

You must remove both wiper arms,open hood and remove metal vent panel that runs the width of the vehicle.You will see where the arm has falling off ,replace all bushings(4).NAPA carries them.

You need to take the plastic cowls off that cover the wiper arm linkage and wiper transmission to inspect it...cowl is held on with 3 Phillips screws near windshield and some one inch wide metal clips, take off the gasket that fits on top. If both are not working check the transmission where linkages attach, if one wiper blade is not working it is usually the drivers side where the nylon bushing that forns a ball/socket sort of connection fails due to build up of debris and the rusting of parts that follows, let me know if this helps.

Try Rock Auto Parts. They might have it.

http://www.rockauto.com

I'am not sure what you mean by the bushing, but I just repaced the wiper motor in my 95 Dakota.
1-remove wiper arms from the pivots.
2-open the hood
3- remove the crowl. there is a line of screws that need to taken out. set the crowl out of the way.
Don't try to remove the motor without removing the crowl. It just won't work.
4- remove the 3 nuts that hold the motor to the firewall.
5 carefully pull out the motor and wiper linkage.
6- remove the nut that hold the linkage onto the motor and remove the linkage. BE CAREFUL you don't want to drop and loose that nut. There is a flat spot on the shaft between the motor and the linkage where a 6" adjutable wrench etc can be put to hold the shaft when taking off the nut.

Follow the above steps in reverse to reinstall. I did use lock tite to make sure the nut doesn't come off the motor shaft.

You will need to take the cowl off and replace all of the bushings. Most auto parts stores will have them in stock.

THE WIPER MOTOR CONTROLS THE WIPERS VIA A LINKAGE LOCATED BELOW THE WINDSHIELD UNDER THE HOOD YOU MAY NEED TO REMOVE A THE PLASTIC COVER TO ACESS THE ASSEMBLY , ONE OF THE LINKAGE ARMS HAS FALLEN OFF POSSIBLY DUE TO A WORN BUSHING ON THE END OF THE ARM ,JUST REPLACE THE BUSHING AND REATTACH IT

Likely broke the nylon bushing cap on the left side wiper transmission assembly. Best as I can tell, the cap is not replaceable so replacement of the assembly is required. These are available new AC Delco p/n 19120840 about $75, or on ebay used for about $35. ACDelco 19120840 Windshield Washer Transmission Kit. Goold luck, mine's broke too!

theres a linkage in your wiper, it must have gone off, try replacing the linkage bushing or try buying a new linkage wiper if you cant find a bushing. its gotta be the only problem. hope this helps

need to replace new cap

Most likely you will have to replace the wiper linkage from the center pivot to the left or drivers-side wiper pivot. The plastic piece in the linkage gets brittle over time and breaks down. To save a hassle in the future, replace both linkages. It should be under $20.00 for parts.