* Underhood Fuse Box: This is usually located on the driver's side fender, near the battery. It's a larger box and contains higher-amperage fuses.
* Interior Fuse Panel: This is typically found under the dashboard, on the driver's side. It's often under a cover or panel that needs to be removed.
To be completely sure, consult your 1996 Ford F-250 van's owner's manual. The manual will have diagrams showing the exact locations and fuse layouts for both boxes. The diagrams are invaluable for identifying which fuse controls what.