How to Install Car Amplifier Step by Step

Whether it’s your first time traveling or you’re a seasoned traveler, you should try to get into the countryside and escape the urban noise. Here are some tips on how to make the most of your time outside the city.

Would you like to be able to listen to music on the road? Do you want a good-sounding car stereo? You need to know what you are getting. You need to make sure your stereo is in top condition. Without a car amplifier, you won’t be able to enjoy your music at full volume.


Upgrading a car amplifier is a great way to improve the sound of your system. Okay, let’s go straight to the main discussion How to Install a Car Amplifier easily.


In this article there will be tips that will help you keep your car in top condition. These tips could be helpful to you even in the future if you need a major overhaul. So, keep reading and be sure to retain every point.


What You Need to Install a Car Amplifier

Installing an amplifier in your car is a pretty simple process, but you’ll need to buy some supplies beforehand. The first thing you’ll need is the power and ground wiring for the amplifier. Here are the supplies you’ll need:

A Fuse for Your System’s Protection

The main cable will need an extra battery for safety. Mount it six inches above the existing battery connection. The fuse will protect you, your vehicle, and the wire from any fire that could happen if a short circuit occurs.

Wire manufacturers have different current ratings on their wires. However, anything between a foot run of 16-20 will be safe with the following:


  • A 25-amp fuse is used with 10-gauge wire.
  • A 60-amp fuse is used with 18-gauge wire.
  • A 100-amp fuse is used with 4-gauge wire.
  • A 250-amp fuse is used with 1 or 0 gauge wire.


If you’re going to install a car amplifier, you need to buy an amplifier wiring kit. This will help you with all the wiring and prevent any damage.


Speaker Wire and RCA Cables

You won’t find the signal wire in the kit. The RCA cables are the ones that give your amplifier the input signals from the receiver’s source. They are available in different lengths and stereo pairs. Any wire with a gauge of 14-20 is perfect for connecting wires from the output of the amplifier to speakers.

In any case, you should always use thicker wires for your subwoofers. Thicker wires have lower gauges, which is good. However, you should be able to use any gauge between 12-16 gauge.


Which Is the Perfect Place to Mount Your Car’s Amplifier

Installing an amplifier in your car can be a challenge, but it’s made easier with these tips. Where you mount your amp depends on the style and make of your car, but the most important thing is to do it properly.

As you install the amp, follow the directions and ensure it’s safe. You don’t want it to fall and hurt you or others.

The Amp should always be three feet from the stereo. This will prevent noise from the electrical system of the vehicle from reaching the stereo. The distance also ensures that the amp doesn’t interfere with AM and FM frequencies of the radio.

You’ll want to leave a few inches of room around your amp. This will keep it from overheating, as it makes heat when in use. You also don’t want to put it upside down, as the heat that’s being emitted will be reflected back into the amp.

Avoid screwing your amp directly to the metal chassis of your vehicle. This will welcome different types of noise like buzz or hum. Rubber grommets should be used around the mounting screws to isolate the amplifier’s case. Alternatively, create enough room for wire connections and control adjustments.


Ground and Power Wires

You need wires to connect your amplifier to your speakers. The size and quantity of wires you need depends on the distance between the two components. You must follow your instructions to determine the right wire for your setup.


Best Locations for Car Amplifier Installation


Trunk or Hatch Area

A quick way to get your amplifier’s speaker wire down is to mount the amp in your trunk. This is a popular spot for subwoofer amps, as you don’t have to worry about the length of the cable leading away from the amp. But if you’re able to see into your trunk, this might not be the best place for it.


Amplifier Rack

If you’re going for a unique look for your installation, you can build an amplifier rack. An amp rack can be anything that you’ve built to hold one or multiple amps in place. You can install your amplifier wherever you want. You can put it in a trunk or any other place you think of. However, make sure that the place is well ventilated as the amplifier will get hot.


Underneath the Seat

How to Install Car Amplifier
source : Grid oto

If you have a 4-channel car amplifier, you can hide it under the seat. For space reasons, you will want to run all of the wires from your speakers in one central location. You will need to keep in mind that there might be potential for wires to be kicked or stepped on by passengers .


When installing a car amplifier, use rubber gaskets to reduce vibrations. Vibrations from screws can damage the amplifier. When you install your amp, leave a few extra inches on each wire in case you want to fold your seat down. Plan things out and strategize before you start screwing things in.


How to Install Car Amplifier

Steps by Steps of Car Amplifier Installation

First, you will need to gather together your equipment, which includes the amplifier and wires. Here is what to do next.


1. Battery Disconnection

The first step is to safely remove the battery. You should set your parking brake and disconnect the negative terminal of your car’s battery. This will help prevent shocks or electrical shorts.

2. Mount The Amp

After you’ve found the perfect location for your amplifier, it’s time to install it


3. Power Wire Installation

The next step is wiring the car stereo amplifier. The easiest way to do this is to run a wire from the battery to the amp. You can either buy a separate wire or use the one that came with your system. You will want to run this wire through the firewall of your car and into the car’s cabin.


To get the power wire through the firewall, you’ll have to use a new grommet that passes through it. If you can’t find a grommet, drilling a hole through the firewall is an alternative.


If you’re installing a drywall, you must check both sides of the wall. You don’t want to drill into any gas or electrical lines and risk a fire outbreak. You can use a grommet to ensure that you are protected from shorting and fraying wires because it conveniently goes through the hole.


4. Fuse Installation

If you are using the kit, the fuse holder is already installed. If it is not, you should install it in a safe place near the battery. Maybe between 5 and 7 inches from the battery would be ideal. Use a cable tie or a screw to anchor the fuse holder firmly to ensure it does not move around when you are driving. When the fuse blows, you need to anchor the holder to prevent a fire.

After this, you need to cut a piece of wire. The wire should be long enough to reach from the battery to the fuse holder. Use a wire stripper to remove the insulation from both ends of the wire.

Attach the fuse holder to the terminal ring on one side of the wire and attach the car’s power cable to the other side of the wire.

If you’re installing multiple amps, keep the following in mind:

The installation of car audio involves running one power cable from the battery to the source. A second cable then connects the source to each amplifier. By doing this, you will reduce noise and have a clean installation. The thicker the power cable, the better. If you want to run two amplifiers, you must have a thick enough wire to handle their current flow.

5. Power Wire Connection

You attach the power wire to the battery in your vehicle by removing the terminal nut. You slip the ring of the power cable over the bolt securing the battery terminal to the battery post and replace the nut. You make a connection in your car with a top-mounted battery post by crimping a ring terminal on the end of your power wire.


In the next step, you will need to cover your wire with a wire loom to protect it from the heat coming from the engine area.


6. Connection of Ground Wire

To connect your car stereo, you have to find a bolt near the amplifier. Your best bet is to drill one if you can’t find one. After that, attach a ring terminal to the ground wire.


To remove the connector, first scrape off any paint that is still there. Then, clean the bolt locations. Tightly reattach the connector to the vehicle’s metal chassis so that the ground connection of the wire is to bare metal. To keep the area around the connection clean and tight, you can use a star washer, extra screws, and any other tool. Some people prefer coating the connections with silicone to curb corrosion.


7. You can plug in your speaker, RCA cable, and remote turn-on leads.

You need to remove the stereo from the dashboard. Then you’ll plug the wires from the amp into the back of the head unit. If your head unit doesn’t have a remote turn-on output, you will attach the turn-on wire to the power wire that is fused to the ignition. When you wire the subwoofer, you must connect the wires from the subwoofer to the corresponding wires from the amplifier. Also, make sure that all connections are tight and won’t come loose.


8. Turn It on

You’re going to set your car stereo to its original settings. You’ll turn off the bass, EQ, and filters. Turn on your vehicle and connect the negative battery cable. Start your car and turn it on. Turn the volume up, and check each speaker for sound. When you’re ready to start testing the audio system, switch on the subwoofer and adjust its volume. Then, use the balance and fade settings on the head unit to fine-tune the sound.

Make sure the sound system is running smoothly. Make sure the speaker is working well and that there are no static or distortion. Make sure the amplifier gain is in line with the input level and output level. If all systems are good, put the paneling back up and enjoy your music.

Installing a car amplifier is an excellent way to enhance your music listening experience. There are a number of reasons why people install amplifiers in their vehicles, including:


If you are struggling to install an amplifier, there is a reason behind it. It is easy to forget one step and then have a hard time re-attaching the wires. The real question you need to ask yourself is why you are even doing this! Why should you struggle with all eight steps?


Here are the benefits of installing car amplifier:


Increased Volume

The interior of any vehicle is loud. There are sounds from the engine, air conditioner, or horns honking. All these noises combine to make it hard to listen to your favorite country music songs. However, by installing a car amplifier, you can turn up the volume of your radio.


Amplified speakers and subwoofers give power to the voice.

If you love your music, you will need to have a powerful amp for your car stereo. This way, your speakers can produce the kind of sound quality you desire. In addition, amplifiers also help strengthen the signal of your speakers. It does this by increasing the bass frequency, which is usually what most people listen to.


Authentic Audio

Amplifiers are excellent at reducing noise. Noise from the engine can degrade sound quality and cause distortion. Using an amplifier can solve this problem by offering different wattage and multiple output options.


When you install an amplifier in your car, you don’t have to worry about power consumption. In fact, it will help you to use power more efficiently. For example, a high-end amp will give you excellent power efficiency and eliminate any noise from surrounding vehicles.



Driving a car can be exciting, but it can also be dull and tedious. You are always in a rush to get places. You don’t want to be late or you will stress out. The solution is to install a car amplifier. It will make your car a lot more fun and convenient. You can listen to music and choose the volume yourself. The amplifier will not consume much power either.


This installation guide will help you install an amp in your car. The steps are easy and straightforward. We have listed all the places you can put your amp. Additionally, we have discussed the safety issues to be aware of. You will not make mistakes with your installation that could endanger your life.


Here’s a suggestion to help you save money and have fun in your car. It’s installing a car amplifier. You will be able to enjoy great sound while sitting in traffic, not to mention you’ll also beat boredom.



3 thoughts on “How to Install Car Amplifier Step by Step”

Leave a Comment