How do you replace a 1976 Dodge D100 pickup windshield wiper assembly?

To replace the windshield wiper assembly on a 1976 Dodge D100 pickup, start by disconnecting the negative battery cable for safety. Remove the wiper arms by unscrewing the retaining nuts, then lift the arms off the pivot posts. Next, detach the wiper motor and linkage by removing any screws or bolts securing them to the firewall and under the dashboard. Install the new assembly by reversing the process, ensuring all connections are secure and testing the wipers before reattaching the battery.