Where is the headlight relay on a 2000 Buick Regal?

The headlight relay on a 2000 Buick Regal is typically located in the engine compartment fuse box. To access it, open the hood and look for the fuse box near the battery. The relay itself will be labeled, so refer to the fuse box cover or the owner's manual for specific identification. Make sure to disconnect the battery before attempting to replace or inspect the relay.