What Is The Best Amp Wiring Kit? (2022 Edition)

What Is The Best Amp Wiring Kit? (2022 Edition)

If you’ve spent a great deal of time and money assembling the best speakers, subwoofer and amp for your car, there’s a crucial part of the equation you shouldn’t overlook…

To get the best out of your system, you’ll need a car amplifier wiring kit so you can hook up the powerplant to the stereo.

Today, we’ll look at 5 of the very best amp wiring kit options then walk you through what you need to look out for when you’re buying one.

We’ll get straight down to business with the reviews…

Best Car Amplifier Wiring Kits (New for 2022)

Our #1 Choice
Kicker PK4 4 Gauge OFC Power Amplifier Installation Kit
NVX XKIT42 Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit...
Honorable Mention
Rockford RFK4X 4 AWG Complete Amplifier Install Kit
Kicker PK4 4 Gauge OFC Power Amplifier Installation Kit
NVX XKIT42 Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit...
Rockford RFK4X 4 AWG Complete Amplifier Install Kit
Our #1 Choice
Kicker PK4 4 Gauge OFC Power Amplifier Installation Kit
Kicker PK4 4 Gauge OFC Power Amplifier Installation Kit
NVX XKIT42 Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit...
NVX XKIT42 Full Spec 4 Gauge 100% (OFC) Oxygen Free Copper Complete 2-Channel Amplifier Wiring Kit...
Honorable Mention
Rockford RFK4X 4 AWG Complete Amplifier Install Kit
Rockford RFK4X 4 AWG Complete Amplifier Install Kit

1. Kicker PK4 4-Gauge Power Amp Installation Kit

Kicker is a household name in the car audio field and this 4-gauge power kit is tailor made for all systems up to 1000 watts. You’ll get everything you need including a decent selection of hardware to make amp installation a breeze. There’s a 1-year warranty in place. If you buy this kit with a Kicker amp, you’ll get that guarantee extended by a year into the bargain.


  • Ideal for systems up to 1000 watts
  • Oxygen-free copper
  • Premium power wire and ground wire


  • Some complaints about missing components

If you’ve got a beefy sound system and you’re looking for a premium-grade 4-gauge amp installation kit, the Kicker PK4 is an obvious choice.

While this kit is suitable for class D amps up to 1000 watts RMS, take note that the maximum output it serves for class A/B amps is 650 watts RMS.

The oxygen-free copper wiring is used to enable maximum power and optimal signal transfer without the menace of resistance and distortion.

You’ll get 17 feet of power cable and 17 feet of lead wire. On the Amazon listing this is incorrectly claimed to be 20 feet so buyer beware. You’ll also get the wiring kits, 2 feet of ground cable, a fuse holder and fuse along with a range of hardware to make your life easier.

2. NVX 4-Gauge Car Amp Installation Kit

The NVX 4-gauge is a sterling installation kit coming in at a very attractive price point. This kit is available for 2-channel, 4-channel or 5/6-channel amps so you’re spoiled for choice. You’ll get everything you need for a quick, clean install in one package so you can get straight down to business. Components are rock-solid and you’ll get first-class performance at a third-class price tag for the double win.


  • Convenience of a complete kit
  • 100% copper wiring
  • Envyflex insulation


  • Short on fuses

If you’ve invested heavily in your sound system, the last thing you want is to let yourself down by getting a shoddy wiring kit. While this NVX 4-gauge is not particularly expensive, you certainly won’t be stiffed in terms of performance.

You’ll get literally everything you need with this kit to wire up any amps up to 1000 watts RMS.

Wire is top-notch silver-tinned copper that will hold up to even harsh conditions without letting you down. You’ll get 20 feet of power wire, 20 feet of remote lead wire, 40 feet of speaker wire and 3 feet of main ground wire. This is more than generous on the length front and is one of this kit’s key selling points.

Heavy duty distribution blocks and fuse holder along with all the terminals, connectors, fuses and zip ties you need completes a great value package of wiring built to last while delivering top-tier performance.

3. Rockford Fosgate RFK4X 4-Gauge Complete Install Kit

Few collections of the best car audio kit come without an entry from the stellar Rockford Fosgate. This 4-gauge kit is also available in 8-gauge and, while it might not be the cheapest option at your disposal, it’s a strong kit from a brand you can trust. You’ll get the hardware you need along with most components to wire up your amp for outstanding sound quality.


  • Ideal for systems up to 1200 watts
  • Superb power transfer
  • Superb components


  • No speaker wire
  • No patch cables

While this kit doesn’t give you absolutely everything you need to install your amp, you’ll get a great range of wires and components covering most main bases. Length of wiring is more than sufficient for most needs. You’ll get 17 feet of power cable, 3 feet of main ground wire, 20 feet of RCA cable and 20 feet of remote wire.

Power transfer is optimized thanks to oxygen-free copper and the caliber of the power and ground wire. This kit is expressly designed for powerful systems and is good up to 1200 watts.

You’ll get a fuse, connectors, a grommet and some cable ties thrown in for a comprehensive package that will see you on your way to a rocking sound system.

4. Boss Audio KIT2 8 Gauge Amp Wiring Kit

Boss Audio continues to dominate the car audio space with superb products at very competitive prices. For a wiring kit, the KIT2 represents outstanding value without compromising quality. As well as the basics, you’ll also get plenty of extras so this kit is perfect even if you want to hook up multiple amplifiers in a more complex sound system.


  • High-grade speaker wire and RCA cables
  • Ample length of wiring
  • Heavy insulation


  • Questionable wire connectors

You’ll get a generous helping of wire with this kit so you can connect several amplifiers if need be. You’ll get 20 feet of 8-gauge power cable, 3 feet of ground cable and 18 feet of turn-on wiring. For multiple amp set-ups, there’s also 6 feet of loom tubing, rubber grommets and wire ties so you’ve got all you need at hand.

Insulation with this wiring is first-rate. This will extend the lifespan of your wiring while also protecting against corrosion, an exceptional bonus at this price point.

With ring terminals completely this highly attractive wiring kit, you can count on Boss Audio for quality at a bargain basement price. We can’t recommend the KIT2 strongly enough.

5. KnuKonceptz Complete 8 Gauge Amplifier Wiring Kit

For an all-in-one 8-gauge wiring kit that combines performance and affordability in one enticing bundle, the KnuKonceptz package deserves a place on any shortlist. The wiring is extremely easy to work with and you’ll get ample length for most reasonable installations. The copper aluminum cables are an uprated version of copper-clad aluminum.


  • KCA (copper aluminum) cable
  • Durable
  • Great value


  • Suspect quality control

Last but by no means least in our best car amplifier wiring kits reviews is an outstanding package from KnuKonceptz suitable for pretty potent sound systems that doesn’t cost you a fortune.

You’ll get 18 feet of power wire, 3 feet of ground wire and 20 feet of speaker wire so you won’t be cursing or fiddling around with lengths too short for comfort. The copper aluminum used is a notch up from copper-clad aluminum and forms a fantastic delivery system.

There’s also a fuse holder, RCA cables, gold-plated ring terminals, grommets, loom and wire ties so you have everything you need to hook up even ambitious systems.


Now you’ve got 5 great amp wiring kits for some inspiration, we’ll run down a few of the things you need to take into account when you’re buying one.

6. Knu Concepts 4 Gauge Amp Wiring Kit

For those of you on a budget, this amp wiring kit offers everything you need without breaking your wallet.


  • Affordable kit option for new installers
  • Includes high-quality wire
  • Straightforward installation
  • Gold plated spade terminals


  • Clad aluminum wire isn’t a top performer
  • May overheat if you aren’t careful about power limits

This amp wiring kit has an AGU fuse holder for straightforward installation and copper-coated aluminum (CCA) negative and positive wires for durability while keeping costs down. They’re flexible, but beginner-friendly.

The fuse holder requires minimal stripping, and the housing for the fuse holder and the wire insulation have dramatic visual differences, so you don’t get confused. The kit includes twisted pair RCA cables made with gold plated contacts and tough insulation material. It’s a high-quality wire in a budget kit, so you won’t have to upgrade for better performance.

The kit comes with 18 feet of four-gauge ultra flex blue power wire and three feet of four gauge black wire for grounding. There’s an 80A fuse holder, a five-meter black RCA cables with a built-in turn-on function, and two gold plated ring terminals. Two gold plated spade terminals and 20 feet of clear speaker wire in 14 gauge round out the kit. Plus, it includes wire ties.

Don’t be put off by the clad aluminum. It can help cut down on humidity while protecting the inner copper from corrosion. However, it’s much more dangerous to exceed the power rating, so be sure you’ve got everything squared away, so you don’t overheat.

7. Boss Audio Amplifier 4 Gauge Installation Kit

The Boss kit offers a mix of high end and budget pieces designed to make the kit affordable while ensuring performance. It has a gold plated AGU fuse holder and includes 20 feet of four gauge power cable.


  • Very affordable
  • Offers a mix of high-end and budget
  • High contrast wires
  • Gold plated AGU fuse holder


  • Doesn’t push a lot of power
  • May overheat with more powerful systems

The Boss kit is red to keep it bright and easy to spot. The three-gauge black ground cable gives you a generous three feet with high contrast during installation.

16 feet of 18 gauge remote turn-on wire and 17 feet of high-performance RCA cables give you the connections you need for flexible installation. At the same time, gold plated ring terminals and speaker terminals finish out the kit. You get two sizes of ring terminal (5/16 and 1/4 inch).

It’s a highly affordable kit that also comes in two-gauge and six-gauge if you happen to need a slightly different kit. It offers good performance, but you’ll need to pay close attention to the power and wattage of your system to take full advantage of the equipment.

It can be dangerous to use clad aluminum wire with higher power, so be sure you’ve gotten the power situation worked out before installing it. However, if you understand the limits of the kit, it’s a highly affordable alternative.


Choosing a car amp can be confusing enough. Do you need a monoblock or a 2-channel?

Perhaps you have more speakers and you want the versatility of a 4-channel or 5-channel amp instead?

Check out our series of guides and reviews to help you make the right decision here.

What To Consider When Choosing Car Amplifier Wiring Kits

Once your amp is in place, you’ll need the proper equipment to hook it up and that starts with the best wiring kits.

Bear these handy pointers in mind to simplify your buying decision and get the right piece of kit for the job fuss-free.

What Type of Wiring Kit Do You Need?

There are 2 main categories of wiring kits at your disposal:

Complete Amplifier Kit: As the name makes clear, everything you need for a straightforward hook-up is included. You’ll get wire (speaker, power and ground), the RCA cables, grommets, fuse holder and terminals along with remote turn-on wire if applicable.

Power Kit: This kit gives you the basics for powering your amp but you won’t get any wire or connection cables. You can also pick and choose from these power kits and buy individual parts if you already have some of what you need in place. The key benefit to a power kit is that you’ll get extra hardware thrown in including wing terminals and cable ties.

How About The Wire Size?

The next issue you need to consider is the wire sizing.

There’s no clear-cut answer here since you’ll need to match the wiring with your amp. Whether you buy your amp first or the installation kit, you’ll need to be absolutely certain they’re a good fit.

These are the most common sizes:

  • 0/1 Gauge: 1000 Watts and Above
  • 4 Gauge Amp: 400 – 1000 Watts
  • 8 Gauge: 200 – 400 Watts

Note: You might see 10-gauge wire available but this is generally not worth the extra money and can actually be tougher to work with.

Type of Wire

Much of the wire sold today for speakers and amps is copper-coated aluminum wire. Often, this is not clearly disclosed so you might think you’re buying pure copper.

Since the price of copper started rising, this is now the most common method of production but it doesn’t work as well as pure copper for high-current wiring.

For the average installation, this won’t be a problem. If you specifically want pure copper wiring, make sure you check the labeling closely.

Length of Wire

Always err on the side of caution when it comes to the length of the wire. You’re much better placed with a little extra than selling yourself short and not having enough to reach the fuse holder.

You’ll need a power cable long enough to reach from the positive terminal of the battery and the fuse holder to your amp. Don’t forget to factor in extra for the little bends and kinks. 18 feet is a decent guideline for power cable.

The RCA cables and remote wire should be around 15 feet but it certainly won’t hurt if you get a bit more.

Scrimping on the wire leads to stretching and tension which is likely to bring about trouble further down the track.

What’s A Ring Terminal?

Some of the best amp wiring kits include ring terminals.

These help no end with solid connections for both positive and negative cables.

Have You Got Multiple Amps?

If you’ve got a more complex system with more than one amp on board, you should look for a dual amp wiring kit.

Investing in a power distribution block lets you run several amps using just one power wire from your battery. Using multiple outlets, you can then run wiring to your amps.

It’s essential to make sure your amp kit’s fuse rating matches or exceeds that of your amp. This will put paid to any nasty power spikes.

General Checklist To Look Out For In An Amp Wiring Kit

While not all of these are essential, keep your eyes peeled for the following items:

  • Remote wire
  • Good quality, lengthy RCA cables
  • Speaker wire
  • Positive wire
  • Ground wire
  • Fuse
  • Fuse holder
  • Zip ties
  • Ring terminals


We hope these brief reviews and handy buying guide have helped you along the way to choosing the most appropriate car amp wiring kit.

Getting your amp wired up is really not rocket science but it’s worth taking the time in advance to think about what you need. Failing to plan ahead is liable to lead to mistakes that simply don’t need to occur if you do your due diligence.

Check out our range of articles on getting the best amplifier for your car if you’re stuck for choice there and come back soon!

Brett Gordon

The engine behind editing at DigMyRide and the brains behind its build. During the day, Brett is a thirty-something dude from SoCal climbing the corporate ladder, but by night, he spends his time contributing to the online world of automotive tech & trends.