Where is the fuse for the dome light in your 99 Mercury grand marquis?

In a 1999 Mercury Grand Marquis, the fuse for the dome light is located in the fuse box, which is typically found under the dashboard on the driver's side. Specifically, it is usually labeled as "Dome" or "Interior Lights." Check the owner's manual for the exact location and fuse number for reference. If the dome light is not functioning, inspecting this fuse is a good first step.