How to Install a Car Amp - Installing a DIY Car Amplifier
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How to Install a Car Amp – Installing a DIY Car Amplifier

what you will need

Most amps come with a complete wiring kit. but if yours doesn’t, you’ll need the main power cable, an in-line fuse (use the wire and fuse size recommended by the amp manufacturer), a ground wire, rca cables, speaker cables, power cable remote and connector plugs to fit head unit, amplifier and speakers (some units may require bare wire connections).

The amount of space you have to work with will help determine the size of amp you buy. A common place to put an amplifier is in the trunk or trunk of your car. however, if you drive, for example, an SUV, space becomes limited and you should consider mounting the amplifier under, behind, or between the seats.

Reading: How to connect wires to amp

Another consideration is that amplifiers generate heat, hence the need for cooling fans. they should always be placed in a position that allows for maximum airflow. if you are installing subwoofers in a box, mounting the amplifier on the side of the box is a good option. mount them high to prevent damage and maximize airflow.

The next thing to consider is how you will route the wiring from the amplifier to the stereo head unit and the power cable to the battery. it is best to route the wiring under the floor moldings that run along the lower door frames, following pre-existing wiring harnesses where possible. RCA cables should be placed on the opposite side of the car from the power cables to avoid interference. always be aware of the position of your battery in the engine compartment and make the most direct route to it with the main power cable.

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In most cases, the main power cable to the battery will need to pass through the firewall. whenever possible, try to use existing holes, following existing wiring. if this is not possible, you will have to drill a new hole through the firewall.

adjustment

1. make sure you have enough wiring for the job. if you’re short on wiring, order more or locate the amp that fits your wiring.

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2. Disconnect the positive battery terminal before beginning any work. make sure you know what’s behind where you’re about to drill to avoid damaging components.

3. start with a small pilot hole with a steel drill bit, then drill the hole to the proper size. you will need to fit a rubber grommet to avoid damaging the cable with the sharp steel edge of the hole, so drill to fit the size of the grommet.

4. paint the bare metal surface around the drill hole to prevent the hole from rusting and attach the washer.

5. set the amplifier in place and mark the mounting holes with a pencil or marker. again, check the underside of all surfaces before drilling, then drill and secure the amplifier with mounting screws.

6. route all your wiring to the appropriate places and cut it to size, always leaving a little more. a little slack in the cables is better than having them too tight.

connect it

1. Cut the insulation off the end of all wires and leave enough room to connect the connector plugs. some systems will only require you to use bare wire as a connection. if this is the case, strip the wires to the proper length to fit the depth of the connection plugs.

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2. Connect the ground wire to a metal point connected to the car’s chassis or to a dedicated ground point. make sure the ground wire connection is bare metal. remove any painted, rusted, or dirty surfaces with a file or sandpaper to ensure a good ground connection.

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3. Plug the RCA cables, speaker cables, and remote turn-on cable from the amp into the back of the head unit. If your head unit does not have a remote turn-on cable, you will need to connect the amp’s remote turn-on cable to your head unit’s power cable or to another power cable going from the accessory setup on the ignition. change. this should be done to prevent the amp from staying on when you turn off the engine, draining your car’s battery.

4. connect the amplifier’s front, rear, and subwoofer speaker cables to the corresponding speakers.

5. Run the amp’s power cable (making sure it’s on the opposite side of the car from the rca cables) through the hole in the firewall and onto the battery.

6. Install the in-line fuse on the main power cable, crimping all connections and cable ends. The fuse holder may need to be mounted to a solid structure in the engine compartment, depending on its size. To protect the car’s electrical system, install the in-line fuse as close to the battery as possible.

7. connect the main power cable from the amp to the positive battery cable and reconnect the positive battery cable to the positive battery terminal.

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8. secure all wiring with cable ties.

9. test the entire operation using the balance, attenuation, and subwoofer settings on the main unit to ensure that each individual speaker performs without static or distortion.

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