Where is the headlight relay on 1990 Mazda miata?

On a 1990 Mazda Miata, the headlight relay is located in the fuse box, which is situated in the engine compartment on the driver's side. The relay is typically found in the upper row of the fuse box, near the back. To access it, you may need to remove the cover of the fuse box and identify the relay based on the diagram usually printed on the inside of the cover.