Which fuse is for the tail lights on a 2000 Ford Taurus station wagon?

The owner's manual for your 2000 Ford Taurus station wagon is the best resource to find the correct fuse for the tail lights. The fuse box diagrams usually show which fuse corresponds to which circuit.

Without the manual, it's impossible to say definitively which fuse controls the taillights. The fuse box location may be under the hood or inside the passenger compartment, and the labeling may not be perfectly clear.