Your car's various electrical components rely on the fuse or a low-resistance resistor to work properly. Over time, however, this component will eventually wear down. Once any of your vehicle's electrical parts suddenly stops working, check out the assembly and to figure out the culprit. If you've eliminated other possible causes, and you've come to the conclusion that a blown fuse is what's causing electrical problems, it's time to replace it. Fortunately, the process is very easy. Here's how:
- Puller, pliers, or tweezer (optional)
Step 1: Find the fuse box.
Depending on your car make and model, this panel can be found under the hood, under the dashboard, beneath the glove box, or on the dash door jambs. You can always check your car manual if you're having problems locating this panel box. Once you've found the panel, pull up the cover. Inside you'll see small, colorful buttons or switches inside. These switch- or button-like parts are actually the different fuses that correspond to an electrical component. Now if you look at the inside part of the panel cover, you'll see a diagram to help you figure out which resistor is connected to which vehicle component.
Step 2: Locate the busted resistor.
Once this part is busted, it will have a broken filament or will be completely black inside. You can also use the diagram on the panel cover to help locate the problematic part.
Step 3: Remove the blown resistor.
You can use a puller, pliers, or a pair of tweezers to remove this part. However, if you don't have any of these tools, you can simply use your hands. Carefully pull out the busted component, making sure that you don't pull out nearby resistors.
Step 4: Attach the new resistor.
Double-check first and see if you've got a resistor with the right amperage. Then simply insert the new resistor into the slot. Push it carefully down until it locks in place. Once it's securely installed, put back the panel cover in place. Don't forget to test the newly installed resistor by switching on the ignition.
Tips to consider
- Before starting with the installation, make sure the ignition is switched off.
- If you haven't got the time to buy a new resistor, simply remove the busted one and replace it with a resistor from a less frequently used component. If the headlights' resistor is busted, replace it with one that's used by the cigarette lighter until you're able to get a new part.
- Never install a resistor with the wrong amperage since this can cause more electrical problems.
- If the new resistor blows out again or the electrical circuit doesn't seem to work after the installation, this indicates a more serious electrical problem. If this is the case, you'll have to check the entire electrical assembly or have a mechanic take a look at your car.
- Never remove a fuse by force. When dealing with a hard-to-remove resistor, gently pry it off with a screwdriver or paper clip.