What Does A Blown Fusible Link Look Like

Want to know what does a Blown Fusible Link Look Like? When there is an excessive current flow due to a short circuit or other internal malfunctioning issues, the fusible link or primary alternator fuse can turn bad or blow out. It can be confusing and difficult to detect such an issue without knowing the signs and symptoms of a bad fusible link. This article will address what one should look for in order to accurately identify if their vehicle’s fusible link has gone bad. Typical symptoms include difficulty using automatic windows and central lock controlling options, as well as trouble with wipers, radios, and music player control.

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What Are The Other Symptoms To Detect A Bad Fusible Link?

What Are The Other Symptoms To Detect A Bad Fusible Link
What Are The Other Symptoms To Detect A Bad Fusible Link

Being aware of other signs and symptoms that indicate a bad or blown fusible link is important for proper identification.

1. Enable To Use of The Automatic Option For Windows & Central Lock

When noticing that the automatic opening-closing windows and central locking options are not operating, the manual intervention must be employed in order to lock and unlock the windows and doors. Taking this approach will ensure the continued security of the vehicle.

2. Problem With Wipers

When a fusible link has been compromised, one of the most common symptoms is an issue with the vehicle’s windshield wipers. This causes them to become non-responsive and unable to keep the front view clear for safe driving conditions during inclement weather. As this can be a major safety hazard, it is important to regularly check your fusible links for any signs of trouble so that your wipers are able to do their job properly.

3. Radio & Music Failure

Most people rely on the radio for news updates and to enjoy music when driving. However, a bad fusible link can mean the inability to tune in or even if the sound is heard, it may be unclear and choppy. This can disrupt any attempt at listening pleasure while on the road.

4. Battery Failure

When the fusible link becomes faulty or bad, it is unable to provide an adequate charge for the vehicle’s internal battery, resulting in possible starting or operation issues due to the battery failure. This can be identified as a clear indication that the fusible link should be replaced.

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5. Electrical & Lighting Issues

Today’s modern and computer-controlled vehicles contain an array of electronics that rely on the charging system voltage. If a fusible link is blown, broken or damaged, it will prevent the vehicle’s charging system from working properly and can cause major electrical issues. This can result in the headlights, warning lights, check engine lights or other lighting starting to dim. Therefore, if any dashboard warning lights turn on or any other vehicle lights become dimmer than normal, it is important to check the condition of your fusible link and replace it if necessary. These are common symptoms that serve as warnings for when you may have a failing fusible link.

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What Should You Do After Detecting A Bad Fusible Link?

Whenever a symptom that points towards the presence of a blown fusible link is encountered, it is important to first confirm the issue before proceeding with its replacement. This will ensure that time and effort are not wasted on replacing parts that may not be faulty. The necessary steps for replacing the fusible link must then be followed in order to correctly complete this task.

Diagnosis & Confirm The Problem

In order to diagnose, one should first look under the hood of the vehicle and locate the battery. The fusible link is usually situated close to the battery. Once located, it is important to search for a smaller, more rubbery wire that could be identified as a fusible link. In some cases, this wire will feature a tag with a “fusible link” printed on it so one can easily recognize it. After confirming its identity, an inspection should be conducted in order to determine if there are any damages present.

Inspecting The Electrical Continuity

Using a voltmeter or multimeter, one can check the electrical connection’s continuity setting by clipping a lead on one end of the circuit and another to its opposite end. If the presence of continuity is indicated, then the fault does not lay with the fusible link and further checks should be done. On the other hand, if no continuity is detected then it may suggest that there is an issue with the fusible link. Care must be taken in this situation to ensure that any 12-volt continuity test wand used will suitably match all circuits involved as not all automatically contain 12 Voltages.

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Replacing The Fusible Link

Following proper diagnosis and inspection, if confirmation is made that the only necessary action is to replace the fusible link, then adherence to the following process should be observed.

  • Identify the fusible link that meets vehicle specifications and has adequate resistance.
  • Disconnect and remove the existing fusible link.
  • Accurately install a new fusible link in place of the old one, ensuring a secure connection.
  • Weather-proof connections by using either heat shrink tubing or electrical tape to wrap joints tightly.

Remember that the fusible link length should be four times larger than the gauge wire size. This can be easily achieved with the use of new updated fusible links that come pre-installed with crimp connectors, making installation quick and simple.

Is Replacing The Bad Fusible Link Typically Expensive?

When it comes to servicing and replacing fusible links, there is no need for concern about cost. Even the most popular and trusted brands in the market offer their product at affordable prices. For instance, GM Motors offers their fusible link at just $3. In addition, many people include this task as part of their annual vehicle maintenance routine, so they do not have to consider labor costs either if they choose to perform the inspection testing and replacement themselves.

How Often Should You Inspect Or Service A Bad Fusible Link?

Inspecting and replacing the fusible link should be done whenever any of the previously mentioned symptoms are encountered. Manufacturer and technical experts, however, recommend that all fusible links be replaced annually. The inspection should check for corrosion, cracks in soldered joints, paint or chemical residue, and other foreign material. Replacing it sooner than once a year is an option if desired; however, annual servicing of the vehicle is typically when this task should be carried out.

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Final Thoughts

Fusible links may appear to be small and insignificant, but they are in fact an integral part of a vehicle’s electrical system. They help control the flow of electricity, preventing damage that can occur if too much current is allowed to pass through. It is essential to keep the fusible link updated to ensure its effectiveness. If you experience any of the above symptoms, it could indicate that your fusible link needs attention from a trained technician.

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