I have a 1993 F250 4x4 super cab with 351 and a 5 spd. Where do I find the inertia switch, and how do I reset it? Do I need to do this after changing plugs and rotor, cap and wires - or just after change fuel filter?
Thanks mat

 

You don't need to reset it unless you had an accident with enough force to trip it. The switch is located behind the passengerside kick panel just forward of the door below the instrument panel. You can see it without removing the panel.

 

actually, you have to remove the kick panel to see it or reset it.

 

On my truck you can reset it without taking the kickpanel off. You can't really see it though. Its a button you push down.