To find it, you'll likely need to:
* Look carefully under the dash: Use a flashlight to get a good view of the area. Look for a small, usually square, box with a button or reset switch on it. It might be attached to the side of the dash or even tucked behind a panel.
* Consult your owner's manual: If you still have the original owner's manual, it should have a diagram showing the location of the inertia switch.
* Check online forums: Search online forums dedicated to 1988 Ford Rangers. Other owners might have posted pictures or descriptions of their inertia switch location.
Remember to disconnect the negative battery terminal before working near electrical components to avoid accidental shorts or shocks.