Where is the actual horn located under hood of 97 buick leSabre?

The horn on a 1997 Buick LeSabre is typically located behind the front bumper, not directly under the hood. To access it, you'll likely need to remove or at least partially loosen the front bumper. It's usually mounted to the radiator support or a similar structure in that area. You won't find it easily visible just by popping the hood.