Inertia Switch: The inertia switch is usually located in the passenger compartment, often under the dash or in the area of the kick panel. It's designed to cut off fuel in a collision. Check areas near the floor on the passenger side. You might need a flashlight and possibly have to feel around to locate it. It's usually a small, square or rectangular box.
Fuel Pump Relay: The fuel pump relay is usually located in the under-hood fuse box or power distribution center. This box is commonly found in the engine compartment, often near the battery. The relay itself will be a small square component, often with a clicking sound when it operates. You'll need to consult your owner's manual or a wiring diagram (available online through various automotive parts websites) to identify the correct relay specifically for the fuel pump. The diagram will indicate its location in the fuse box.
Important Note: Before working on your vehicle, always disconnect the negative (-) terminal of the battery to prevent accidental short circuits. If you are unsure about locating these components or working on your car's electrical system, it's always best to seek assistance from a qualified mechanic.