How to replace wiper linkage

We do not have that models information, but most wiper systems are somewhat related. As such and looking at pictures of that model I would say you remove both of the arms then open the hood and remove the plastic cowl panel that covers the area below the windshield. Normally that is secured with screws and clips, the seal at the edge of the firewall is also something that has to come off to remove the panel. The wiper motor and transmission (linkage) should be bolted in place with a few bolts. A common failure is that the plastic bushings wear and fall apart. For some vehicles you can even get just the bushings to replace them.