How do you install a wiper motor in Lexus LS 400?

To install a wiper motor in a Lexus LS 400, first, disconnect the negative battery terminal to ensure safety. Remove the wiper arms and the plastic cover from the base of the windshield to access the motor. Unscrew and disconnect the old wiper motor from its mount and wiring harness, then position the new motor in place, secure it with screws, and reconnect the wiring. Finally, reassemble the plastic cover and wiper arms, and test the motor to ensure it operates correctly.