How do you replace a headlamp assembly on a 2001 Volvo S80?

To replace the headlamp assembly on a 2001 Volvo S80, first, open the hood and locate the headlamp assembly. Remove the screws or clips securing it in place, then carefully disconnect the wiring harness. Once the assembly is free, install the new headlamp by reversing the steps: connect the wiring harness, secure it with screws or clips, and test the new headlamp to ensure it functions properly. Make sure to check the alignment of the beam after installation.