You don't really, you would replace the entire linkage. Best place to get it from and be correct the first time would be your dealer.
To replace the windshield wiper linkage bushings on a Chrysler TC Maserati, first, remove the wiper arms by loosening the nuts and carefully pulling them off. Next, disconnect the wiper linkage by removing the screws or bolts securing it to the vehicle. Once the linkage is free, replace the old bushings with new ones by pressing them into the linkage assembly. Reassemble the linkage and wiper arms, ensuring everything is securely tightened before testing the wipers.
To replace the windshield wiper linkage bushings on a 2002 Ford Ranger, first, remove the wiper arms by loosening the nuts and lifting them off the posts. Next, remove the plastic cover from the base of the windshield to access the linkage. Disconnect the wiper linkage from the motor and the windshield frame, then replace the worn bushings with new ones. Reassemble everything in reverse order, ensuring all connections are secure before testing the wipers.
Its a dealership part
Check eBay for the plastic linkage bushings. They are not available from the Ford dealers.
The linkage bushings are worn/missing/broken or the wiper arms are not timed properly to the wiper transmissions.
To replace the wiper linkage on a 2000 Nissan Frontier, first, lift the wiper arms and remove the nuts securing them to the wiper motor. Then, detach the plastic cover at the base of the windshield to access the linkage assembly. Remove the bolts securing the wiper linkage to the vehicle, disconnect it from the wiper motor, and replace it with the new linkage. Finally, reassemble in reverse order, ensuring everything is securely fastened and properly aligned.
Rockauto.com has them and so does O'Reilly's auto parts A Chrysler dealer should be able to get them.
Remove the old wiper and replace with a new one
Below
The 1999 Nissan windshield wiper linkage is held in place by three retaining nuts. Remove the retaining nuts and the linkage will come free. Replace the linkage with new linkage.
The wiper linkage is bad. Or the wiper arm stud bushings (where the arms attach to the cowl) are rotted out.
To replace the wiper linkage bushing on a 1994 Dodge Dakota, first, disconnect the negative battery cable to ensure safety. Remove the wiper arms by unscrewing the retaining nuts and gently pulling them off the shafts. Next, remove the screws or bolts securing the wiper linkage assembly, and detach it from the vehicle. Replace the worn bushing with a new one, reassemble the linkage, reattach the wiper arms, and reconnect the battery.