How to Test an Amp of Your Car?

Are you looking for how to test an amp tutorial? Then, you are in the right place. Today, we will show you the simplest way to test an amp of your car. By following our steps, you can easily test the amp.


Most of the people think testing an amp is a complicated task. This is not true. Yes, this is a simple task to do with some concerning things to remember. Basically, you need to keep some important factors in mind.

When you are trying to test any electrical part of a vehicle, you need to do it perfectly. Otherwise, it can also cause damage to your car. Why do you test the amplifier? There are many reasons to do it.

If you find burn marks or melted component, this is a good idea to remove the amplifier from the car. Otherwise, this would become risky to test on the vehicle.

Things you will need to follow how to test an amp tutorial

In order to complete the test, you will need some accessories. Without using the accessories, you can’t test the amp properly.

The three components are enough to complete the test. Now, you can follow our step by step process to test an amp of your vehicle.


What is the purpose of testing the amp? Do you want to check its workability? Then, you need to do it in a right way.

You will find two wires in an amp. A black wire and a red wire. The red wire is known as power cable and the black wire is known as ground cable.

You need to ensure 12-volt power coming through the cable in order to check the amp. If the power is less than 12 volt, the amp will not work.

Take the power wire and touch it to the positive post of the battery. Then, touch the ground wire to the negative post of the battery. If the circuit board is okay, the light will turn on. This is the simplest way to check the amp.


It is time to test the amp qualification to put out the sound. Therefore, you need to connect the wires with the speaker. Some amplifier offers RCA cables and some have normal speaker cables.

You need to hook the cables to the speaker. Make sure you have connected the output side cable of the amplifier to test it.

Now turn on the amplifier to check the sound. If the amplifier is on but the speakers do not sound, then, there is a problem with the amplifier. There must have come a problem that needs to be repaired.

If you hear the sound and the sound is good enough, the amplifier is in good condition. You can use it without any tension.


Now this is time to check the fuse of the amplifier. You will find at least one fuse in an amplifier. Some amplifiers also have two or three fuses.

Check the chassis of the amplifier to find the fuse. Fuses are made of the plastic body. You need to check the fuse if the amp does not work properly.

If the fuse is okay, there is some problem in the inline fuse. So, you need to check the inline fuse of the amp too. You will find the fuse twists apart in the case.

The fuse designs with metal on both sides. You will also see a thin wire goes through the fuse. If you find two pieces wire in the fuse, you need to replace the fuse. Sometimes the fuse is also cracked. So, you also need to replace the fuse for this case.

Replacing the fuse can solve the problem.


If the fuse is okay and the amp is not working, there is some problem in the circuit board. You can’t repair the circuit board without any experience. So, you can take it to a professional repairman to repair it. Or, you can buy a new amplifier for your car.

Some Additional Tips

  • This is important to wear safety glasses when you are testing the amp
  • You can remove the amp from the vehicle to test it properly
  • You should choose a wide space area for better testing
  • You should not force to remove or connect any cable if you don’t know its function


Our tutorial on how to test an amp give a complete idea to do the process. So, you do not need any professional to test the amp. You can test the amp if your amplifier is showing any misconduct.

Then, identify the problem and take steps to solve it. If you are going to change the fuse, you need to choose a good fuse computable with the amplifier. You can use a same size and quality fuse for getting a good result.


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