A Step-by-step Guide to Car Audio Amp System Installation

Auto Tech

If you want to improve the performance of your current vehicular audio system or perhaps replace it with a device with more bass punch, don’t hire somebody else to do it. A DIY car amplifier installation endeavor can help you save money. This post will teach you how:

What Will You Require?

The majority of amplifiers come with a basic wiring kit. If not, you will need a remote turn-on wire (you can also consider connecting the Amp without remote wire), an inline fuse, the primary power wire, RCA cables, speaker wires, and connector adapters that fit your head unit amplifier, and the speakers.

The size of the amplifier you buy will be determined by the space available in your car. The trunk area of your automobile is the usual spot to store an amplifier.


  • Make sure you have adequate cable length for the project. Find an amplifier that will work with your existing wiring.
  • Before starting any work, unplug the positive terminal of the battery. To prevent damage to any components, ensure the location underneath is clear where you’re planning to drill.
  • Drill a grommet-sized hole. To prevent damage to the wire due to the sharp burst of the drilled hole, use a rubber grommet.
  • Place the amplifier in the desired location and mark the holes for mounting using a marker. Before drilling, double-check underneath all surfaces, then drill and fasten the amplifier using mounting fasteners.
  • Run all of your cables to the proper locations and cut them to size; always leave a little extra cable for slack.

Plugging in The System:

  • Remove the insulation from the ends of all cables and allow space for connector plugs to be attached.
  • Attach the earth wiring to a metallic spot like a grounding point or on the automobile’s chassis. Ascertain that the earth wire is connected to uncovered metal.
  • Connect your speaker, amplifier’s remote turn-on wires, and RCA to the rear of the unit.
  • If the unit doesn’t come with a remote turn-on wire, connect the amplifier’s remote turn-on cable to the head unit’s power wire or the power wire from the ignition switch’s auxiliary setting. This is crucial to prevent the amplifier from remaining powered on when the ignition is turned off. You can also look into connecting the amp without a remote wire.
  • Plug the amplifier’s rear, front, and subwoofer wires into the appropriate speakers.
  • Connect the lead power from the amplifier to the battery through the firewall gap.
  • Pinch all links and lead ends before inserting the inline circuit breaker into the primary power cable. Position the inline circuit breaker close to the battery to safeguard the vehicle’s electrical system.
  • Reconnect the battery lead to the battery’s positive terminal, and plug the amplifier’s main supply cable into the same battery lead.
  • Use cable ties to fasten all wiring.
  • To ensure each speaker functions without distortion or static, use the head unit’s fade, balance, and fine-tune the subwoofer.

As you can see, installing an amplifier in your car is an easy process. All you need is a calm head and proper precautions.

More Read On: Spero Magazine 

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