Where is the headlight relay on a 1999 Bonneville?

On a 1999 Pontiac Bonneville, the headlight relay is typically located in the under-hood fuse and relay box. This box is found on the driver's side of the engine compartment, near the battery. You can identify the headlight relay by referring to the diagram on the cover of the fuse box, which indicates the specific placement of relays and fuses. Always consult the vehicle’s service manual for detailed information specific to your model.