To find it, you'll need to:
1. Locate your fuse box(es): 1987 Thunderbirds typically have at least one fuse box under the hood and another inside the passenger compartment (often under the dash).
2. Consult your owner's manual: This is your best resource. The manual should have a diagram showing the location of all fuses and what each one controls.
3. Examine the fuse box covers: The covers themselves often have a diagram printed on them that shows which fuse controls what circuit. Look for "brake lights," "stop lights," or a similar description.
4. If all else fails: A reliable online parts store (like AutoZone, Advance Auto Parts, or Napa Auto Parts) allows you to search by your vehicle's year, make, and model. Their websites often provide fuse box diagrams. You can also usually find diagrams on forums dedicated to classic Ford Thunderbirds.
Important Note: Before working with any fuses or electrical components, disconnect the negative terminal of your battery to prevent accidental shorts or damage.
