To find it, you'll likely need to:
* Look under the dash on the passenger side: Feel around for a small, usually square or rectangular, box-like component. It might be attached to the side of the dash or tucked away in a recess.
* Check the fuse box area: Sometimes, it's located near or even within the fuse box itself. The fuse box is usually under the dash, but its exact location will also vary depending on the trim level.
* Consult your owner's manual: This is the most reliable source of information for your specific truck.
If you can't find it after checking these locations, a Ford repair manual or a search online for "1994 Ford Ranger inertia switch location" with images might help. Remember to be careful when working under the dash to avoid damaging wires or other components.