To be certain, you should:
* Consult your owner's manual: This is the best place to find the exact location.
* Check online forums: Search for "1991 Jeep Comanche fuel pump inertia switch location" on Jeep forums. Owners often post pictures and detailed descriptions.
* Visually inspect the area under the driver's side dash: Look for a small, usually square or rectangular, plastic box with a button that can be pushed to reset it.
Remember to be careful when working under the dash; avoid touching exposed wires or electrical components.