Where is the 2 fuse boxes in a 1990 ford F150 truck?

A 1990 Ford F-150 doesn't have *two* fuse boxes in the typical sense of separate, enclosed boxes. Instead, it has a main fuse box (often called the underhood power distribution center) under the hood and a smaller fuse panel (sometimes called a fuse block) inside the cab, usually under the dash.

* Underhood Fuse Box (Power Distribution Center): This is the larger of the two and houses the higher amperage fuses and relays for most of the truck's major electrical components. It's located under the hood, usually near the battery.

* Interior Fuse Panel (Fuse Block): This smaller panel is located inside the cab, typically under the dashboard, often near the steering column or lower instrument panel. It contains fuses for interior lights, accessories, and other lower-amperage circuits.

To locate them precisely, consult your 1990 Ford F-150's owner's manual. The diagrams within will show you exactly where they are situated and identify which fuses protect which circuits.