However, the most common locations are:
* Under the hood in the fuse box: This is the most likely place. The fuse box is usually located near the battery, often on the driver's side fender well. The lid of the fuse box should have a diagram showing which fuse controls what. Look for fuses labeled "Headlights," "Headlamp," or something similar.
* Inside the cab: Some models may have a secondary fuse box inside the cab, often under the dashboard. Again, check the diagram on the fuse box lid.
To find the fuses:
1. Consult your owner's manual: This is the best resource. It will have a detailed diagram showing the fuse box location and the fuse layout.
2. Look for a fuse box diagram: Even if you don't have the owner's manual, there's often a diagram on the inside of the fuse box lid itself.
3. Examine fuse boxes: Carefully examine both the under-hood and (if present) the in-cab fuse boxes. Look for any labeling that suggests they relate to headlights.
If you still can't find them after checking these locations, a search online for "[Your Specific 1981 Toyota Truck Model] fuse box diagram" might yield helpful results. Including the model and trim level (e.g., "1981 Toyota Hilux SR5") will greatly increase your chances of finding the correct diagram.