* Underhood Fuse Box: Located under the hood, usually on the driver's side (but always check your owner's manual to be certain). It's a larger box and contains higher-amperage fuses protecting major components.
* Passenger Compartment Fuse Panel: This is located inside the vehicle, typically on the driver's side, often under the dashboard near the steering column or in the instrument panel. It houses smaller fuses for interior lights, accessories, and other lower-amperage circuits.
To find the precise location and diagrams: Consult your 1999 Chevrolet Lumina owner's manual. The manual will have diagrams showing the location of both fuse boxes and a legend identifying which fuse controls which circuit. This is the most reliable way to avoid accidentally damaging anything.