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4 Lesser known facts about Automotive Fuses

Author: Kafton UK
by Kafton UK
Posted: Sep 23, 2022

A fuse is used to prevent damage to the vehicle's electrical system in the event of a short. Every car comes with two different fuse boxes, one near the engine and the other close to the driver's seat.

Under the hood of your automobile is the fuse box, which safeguards the ECU, cooling fan, ABS motor, and battery. Whereas the power windows, inside lights, radio/audio system, and turn signals are all safeguarded by the fuse box located in the centre console.

There are a variety of fuses, relays, and diodes in a car's fuse box to prevent damage to the vehicle's electrical system in the event of a short circuit or overload. Batteries are connected directly to the fuse box for power. The circuits in your vehicle that are linked to the fuse box.

Fuses feature a break in the wire conductor whenever the current tends to exceed the ampere rating. In most cases, the amperage rating and associated colour code are printed directly on the fuse. Fuse amperage and location are critical safety features.

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The fuse box in your car serves an important function in vehicle safety. A fuse will melt in the event of a power surge or short in a circuit, protecting your car's electrical system from damage. Here are four more facts regarding your car's fuse box that you should be aware of.

1. Different Fuses Located at Different Spots in the Car:

Where the fuse box is located in your car can be found in the owner's manual. The fuse block is where the fuses are installed, and the fuse-box lid is there to keep dirt, dust, and moisture out of the fuses.

Certain motor vehicles use dual fuse boxes. The car's headlight and air conditioner wire are protected by a large fuse box located under the hood, while the vehicle's accessory wiring is protected by a smaller fuse box located within the vehicle. The rectangular or circular shape of the fuse box access door depends on the make and model of the car. Interior fuse boxes are typically located in:

  • Driver-side door panel
  • Driver-side dashboard
  • Below the glove box
  • Below the dashboard

Under the hood, the fuse box's location might change depending on the vehicle's make and model. Depending on how many changes and enhancements have been made to the car's electrical system, it may also include auxiliary fuses.

2. There are several uses for fuse boxes:

An easy-to-open clasp is typically seen on the back of fuse box lids. When accessing the fuses in your car, it's best to flip the lid over. The bottom of the cover of the fuse box in most automobiles features a drawing of the fuse block.

A detailed diagram of the fuse block is provided, labelling each fuse with the component or accessory it safeguards and its placement. It is normal for some fuse boxes to be left unfilled; the fuse box’s drawing will show you where to look. Please ensure that the fuse block contains all of the fuses specified on the diagram. Your auto mechanic should be consulted if you discover that fuses are missing. It's possible the fuses were no longer essential after any maintenance or upgrades were completed.

It's not fuses, but rather huge grey or black squares, that are plugged into the fuse block. They are relays. They prevent damage to electrical components caused by fluctuations in voltage between the power supply and the device. They can get old and broken, too, necessitating a visit to the technician.

Another useful device can be found inside the fuse box. In most newer cars, there is a tiny plastic tool for grabbing fuses. Do not use pliers or your fingers to try to remove plastic fuses. Because of the grabber device, labour can be reduced by a large margin. Buy Automotive Fuses in UK from Kafton UK and stay assured of the quality fuses as well as you can order many other essential items such as cable ties, cable tie tensioning tools, wire connectors, heat shrink tubing, battery terminals, tapes, etc as per your needs.

3. The type of fuse used may vary concerning the car model:

These days, a blade fuse is about as common as it gets in automobiles. These fuses have a metal blade on each end that fits into a fuse block. A little wire is encased in plastic at the top of the two blades for safety reasons. When there's an electrical short in your car, it's that little wire that blows or burns out. The shape of the fuse wires varies, with some forming an S, others an arc, and yet others running straight from one blade to the next. Typically, there are four standard sizes of blade fuses:

  • Regular
  • Maxi
  • Mini
  • Low-profile mini

The amount of amperage that a given blade can handle is represented by a specific colour. If the windshield-wiper fuse in your automobile has blown and you're having trouble with the wipers, make sure to replace it with another fuse of the same colour and amperage rating.

Since each vehicle's fuse box calls for a slightly different size and shape of fuse, it's important to verify your fuse before installing it. Ceramic, Glass, or Plastic cases can protect these fuses.

4. Replacing the fuse doesn’t work always:

If a fuse blows and you have to replace it, you should expect that it will soon blow again. A burned fuse is usually an indication that there is an issue with electrical components or the wiring in your vehicle.

Also, it's not always obvious when a fuse has actually blown. If you look at a blade fuse, for instance, you can take a peek at the sacrificial wire through the plastic, yet the fuse may appear to be functional even if it isn't.

A qualified auto technician will be able to identify any wiring or fuse problems in your vehicle and replace the appropriate fuses.

About the Author

Kafton UK is an excellent supplier of top class Heat Shrink Tubing Mini Reels in the UK.

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Author: Kafton UK

Kafton UK

Member since: Aug 19, 2021
Published articles: 10

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