How do you change Nissan Xterra 2000 headlight assembly?

To change the headlight assembly on a 2000 Nissan Xterra, first, disconnect the negative battery cable to ensure safety. Remove the screws or bolts securing the headlight assembly, typically found around the perimeter, and gently pull the assembly forward. Disconnect the wiring harness from the back of the assembly, then replace it with the new assembly by reversing the steps, ensuring all connections are secure before reconnecting the battery. Finally, test the new headlight to ensure it functions properly.