What fuse is for taillights on 1996 ford ranger?

There isn't a single fuse solely dedicated to the taillights on a 1996 Ford Ranger. The taillights are usually covered by multiple fuses, and sometimes a relay, depending on the specific features (like if you have a trailer hitch). The fuses involved often protect the circuits that feed power to different parts of the taillight system (left, right, brake lights, etc.).

To find the correct fuse(s), you must consult your owner's manual. It will have a fuse diagram showing which fuse(s) control the taillights. The diagram will usually specify the amperage of each fuse, and the location of the fuse box(es) (there's often one under the hood and another inside the cabin).

Without the owner's manual, it's impossible to give you a definitive answer. Trying to guess could lead to damage to your electrical system.