How do you install a headlight assembly for 1997 grand marquis?

To install a headlight assembly for a 1997 Grand Marquis, first, disconnect the negative battery terminal to ensure safety. Remove the screws or bolts securing the old headlight assembly, typically found near the top and side of the assembly. Carefully pull out the old assembly and disconnect the wiring harness. Connect the wiring harness to the new assembly, position it into place, and secure it with the screws or bolts before reconnecting the battery.