Why Does My Car Amp Keep Blowing Fuses?

If you’re a car owner, then you know that keeping your vehicle in good condition is important. And if you’re like most people, you probably also rely on your car to take you where you need to go.

That’s why it’s so frustrating when something goes wrong with it, like when the amp blows fuses. If this has been happening to you, don’t worry, you’re not alone.

In this post, we’ll explore the causes of blown car amp fuses and offer some tips on how to keep them from happening in the first place. Stay safe out there on the open road!

Why Does My Car Amp Keep Blowing Fuses?

Why Does My Car Amp Keep Blowing Fuses step by step guide

Improperly Installed Amplifier

In most cases, An amplifier can be the cause of blown fuses in most cases. They may have been installed improperly, causing too much current draw from your power supply and resulting in an early failure for you! If this happens, then there’s only way to protect the amplifier by installing an inline fuse.

Incorrect Ground wire Connections

Many times, amplifiers are often times overlooked when it comes to installation, but if you notice your amp shows signs of improper wiring or damage then this could be an indication that there’s something wrong with its grounding. Make sure that you connect the ground wire correctly for your device. If it isn’t connected cleanly on an unpainted metal surface, this can cause all sorts of problems including blown fuses!

Power and Ground Wires are Too Close

Another reason an amplifier may blow fuses is if the power and ground wires are too close together. When the wires are too close together, it can cause a ground loop which will overheat and eventually blow up your amp! This can cause interference, especially when the power wires are too thin (AWG) and lack good shielding.

The rule of thumb is to make sure that the power and ground wires don’t touch. This will prevent any sparks or fires from happening, which could burn your house down!

How to Check if  Your Car Amp Fuse Is Blown?

How to Check if  Your Car Amp Fuse Is Blown

The easiest way to tell if your car’s amp fuse has blown is by visually inspecting the thin wire inside. If it melted, then you know for sure that this particular component needs replacing!

To check the fuse visually, you have to:

1. Remove the fuse from its holder.

2. Hold the paper up to a light.

3. Check if the wire is melted within.

If you have a problem with your car’s fuse holder, make sure it is not too hot before opening the cover.

To make sure your wiring is up-to-date, use a multimeter to see if there are any shorts in the circuit. If you don’t have one on hand and think that this may be causing the problem with your car’s electrical system then check out our post about how we tested various tools for testing home electronics!

1. Remove the amplifier from the power supply.

2. Turn on the continuity mode on the multimeter.

3. Connect the multimeter’s lead to one end of the fuse.

4. Connect the other lead of the multimeter to the other end of the fuse to complete this circuit.

If the multimeter beeps, it means that there is no continuity. This could mean either a blown fuse or one in need of replacement!



What to Do if Your Car Amp Is Blowing Fuses?

What to Do if Your Car Amp Is Blowing Fuses

If you’re experiencing amplifier related problems, make sure that the unit is installed correctly.

It’s important to make sure that all of the wires are connected properly and there aren’t any loose connections or suspicious spots causing shorts.

Next, check your power and ground wires to see if they’re too close. If you find that this is causing a problem with performance of the amplifier, move them apart with some needle-nose pliers or an electrician’s wire stripper tool (unless these things hurt then don’t do it!).

Sometimes the fuse is to blame. If you notice that it’s been blown, replace this component with one of equal rating and make sure everything else checks out before moving onto other parts in order to avoid potentially dangerous situations like those mentioned above!

If you notice the amp is still blowing fuses, there may be something wrong with it. In this case, it would make sense to take your amplifier in for diagnostics and repair by professionals only!

If you’ve noticed that your amp is drawing more power than usual from the battery, it could be because of low impedance speakers.

Speakers can become mismatched and produce too much heat if you’re using more than one speaker per channel or if they are of different ratings. For example, a 100 watt rated vs 50watter speakers connected together in parallel will likely cause distortion since there isn’t enough power going into the final product to overcome these opposing forces without getting embarrassed quickly!

The fuse is probably burnt because there’s a short in the circuit. To find out what caused it and how to fix this problem, you’ll need to open up your amp for inspection! If you have any doubts about your ability to troubleshoot the internal electronics of an amplifier, then it’s best that a professional does this for you.

Overheating is the most common problem with amplifiers, and it usually occurs because they aren’t getting enough ventilation. Make sure you have a well-ventilated spot for the amp and nothing is blocking its airflow. If this doesn’t work, then it could be time to get an amplifier with larger cooling fans!

How do i stop my amp from blowing fuses?

There are a few things you can do to prevent your amplifier from blowing fuses:

  1. Incorrectly sized or loose power and ground wires can cause hazards.
  2. The goal is to keep the power and ground cables as far from one another as possible.
  3. The power and ground connections should be made using heavier gauge wire.
  4. Proper ventilation is key to ensuring your amplifier works properly.
  5. Install a stronger fuse in the waterproof and temperature-resistant fuse box.

If you’re ever unfortunate enough to have your car’s amplifier blow a fuse, don’t fret! Follow these simple steps and we’ll teach how easy it is to replace them. Know more about what fuse size is suitable for you by clicking here.

The Symptoms of a Blown Car Amp Fuse.


When you lose power to your car sound system, it’s not just music that disappears. If there is more than one amplifier in use and they all blow at once then sometimes only some speakers will work still producing an unmusical noise or two from these locations instead of anything else meaningful when this happens!

If you suspect that your fuse has blown, it is important to first check with a multimeter. If there’s no continuity in the circuit then replace said component so as not too worse consequences of using a wrong one!

If your amplifier still isn’t working correctly after replacing the fuse, there may be another problem that needs to be taken care of.

If it still does not work, then you may need to reset the amplifier. But if this doesn’t help and your installation looks good—it’s best to take them in for professional diagnosis or repair!

Can a Blown Car Amp Fuse Be Dangerous?

The blown car amp fuse is not dangerous, but this indicates that there’s probably something wrong with your audio installation.

The fuse is your friend. If it blows repeatedly, there may be a short circuit somewhere in the system and this can be dangerous as it could cause an electrical fire!

The longer you wait to find the problem, the more damage will be done and it may not ever go away. If your confidence is low because of this issue take matters into professional hands who can investigate thoroughly without causing any further problems in an already delicate situation!

How to replace a blown fuse in a car amp?

When your car amp fuse blows, it’s time to replace the unit with one of identical rating. follow these steps:

  1. To safely disconnect the power, you need to unplug it from where there is usually an outlet on back of the unit and then remove screws holding cover in place with a screwdriver.
  2. Once you have unscrewed the screw in the center of your fuse cover, it will slide off easily.
  3. In order to resolve the blown fuse issue, remove all of its fuses and then replace them with ones that are equally as strong in amperage.
  4. Replace the fuse cover and double-check that it’s tight.
  5. Restore power to the amp.

You’ll want to make sure that your new fuse doesn’t blow as soon. If it does, there could be a shortage in the wiring or another problem with the amp and you need professional help for this issue!

The Best Way to Avoid Blowing Car Amp Fuse

The best way to avoid blowing a car amplifier fuse is by following these tips:

1. The power and ground wires should be the appropriate size to avoid any safety issues. Make sure they are connected properly!

2. Keep the power and ground wires as far away from each other as you can.

3. For the power and ground connections, use high-quality, thicker gauge wire.

4. Make sure the amplifier is properly vented.

5. Use a higher-quality fuse in the temperature and water-resistant fuse box.

Common Mistakes That Can Cause a Car Amp Fuse to Blow

There are several installation mistakes that can cause an amplifier to blow fuses:

1. Install the amplifier in a cool, dry place:

If you have an amp near your engine or in a hot and humid environment, the excessive heat can damage its internal components to cause fuses blowing.

2. Incorrect wiring of the amplifier:

If you don’t wire the amplifier correctly, it can cause a short circuit that will blow your fuse. Consult with installation instructions or have an expert do this job to avoid making mistakes like these!

3. If you choose not to use an external capacitor:

The role of the capacitor in your car’s electrical system is to prevent voltage spikes from harming it. Without these little guys, you might get an unpleasant surprise when trying drive off after installing new speakers or other accessories!

4. If you use a fuse with the wrong amperage,

Improper use of a small-size fuse can result in blown fuses. Make sure you select one that is appropriate for your amp and don’t substitute another type without knowing what it’s rated at!

FAQs about car amp fuses

Q:1 What happens when an amp blows a fuse?

A: When an amp blows a fuse, it means that there is an excessive current flowing through the circuit. This can be caused by a number of things, including a short circuit, a loose connection, or faulty wiring.

Q:2 Why does my subwoofer keep blowing fuses?

A: If your subwoofer is blowing fuses, it could be because of an impedance mismatch. This occurs when the load (the subwoofer) is not matched to the amplifier. The result is too much power being drawn from the amplifier, which can cause it to overheat and blow a fuse.

Q:3 Why does my 15a fuse keep blowing?

A:  The most likely reason for a 15a fuse to keep blowing is that there is a short circuit somewhere in the electrical system. This could be caused by a number of things, such as a loose wire, a damaged component, or water damage. If you suspect that there is a short circuit, you should have your car checked by a qualified mechanic as soon as possible.

Q:4 What size fuse do I need for a 1200 watt amp?

A:  The size of fuse you need for a 1200 watt amp will depend on the voltage of your electrical system. Most car systems are 12 volts, so you would need a 15 amp fuse. However, if your system is 24 volts, you would need a 30 amp fuse.

Q:5 How do I get my amp out of Protect Mode?

A:  If your amp is in Protect Mode, it means that there is an error somewhere in the system. The best way to fix this is to take it to a professional and have them diagnose the problem.

Wrap Up!

That’s a lot of information to digest, so let’s quickly recap what we learned. We talked about the different types of car audio amplifiers and why they might blow fuses. Then we discussed how to replace a blown fuse in a car amp and some tips for keeping your amplifier running smoothly.

Finally, we answered some frequently asked questions about car amp fuses. If you have any other questions or need help with your car audio system, don’t hesitate to reach out to us. Thanks for reading!

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