What fuse for tail lights 2000 ford focus se wagon?

The fuse for the taillights in a 2000 Ford Focus SE Wagon isn't a single fuse. The taillights are usually protected by multiple fuses, often one for each side (left and right) and sometimes a separate one for the brake lights (which share circuits with the tail lights).

To find the correct fuse(s), you must consult your owner's manual. The manual will have a fuse box diagram showing the location and amperage of each fuse, clearly labeled.

Without the owner's manual, I cannot provide the correct fuse information. Looking in the fuse box itself may offer clues, but incorrectly replacing a fuse can cause further damage. Always use the correct amperage fuse.