Search  for anything...

SoundBox 4 Gauge Amplifier Wiring Complete Kit, Extra Long 20 Foot Power & RCA Cables - Green

  • Based on 2,406 reviews
Condition: New
Checking for inventory...

Notify me when this product is back in stock

Buy Now, Pay Later


As low as $8 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Unavailable
Fulfilled by AVLeaderz
Available payment plans shown during checkout

Features

  • 20 Ft.- 4 Gauge Strand SuperFlex Green Power Wire/ 3 Ft.- 4 Gauge 840 Strand SuperFlex Black Ground Wire
  • 18 Ft.- 14 Gauge Green SuperFlex Speaker Wire/ 18 Ft.- 18 Gauge Black Remote Turn-On Wire
  • 20 Ft.- Green Triple Shielded RCA Interconnect Cable/ 4 Gauge Black Wire Loom
  • Heat Tested, Water Resistent InLine ANL Fuse Holder/ 150 Amp ANL Fuse
  • Connecting Terminals/ Wire Ties

Voltage: 12 Volts (DC)


Manufacturer: SoundBox


Brand: SoundBox


Number of Channels: 1


Material: Copper


Package Dimensions ‏ : ‎ 11.21 x 10.05 x 3.47 inches; 3.31 Pounds


Item model number ‏ : ‎ VSK-4


Date First Available ‏ : ‎ June 3, 2016


Manufacturer ‏ : ‎ SoundBox


Best Sellers Rank: #61 in Car Amplifier Wiring Kits


Customer Reviews: 4.6 4.6 out of 5 stars 2,406 ratings


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • This kit is awesome and I wish I found it sooner!
This is a great little kit it's a bit cheap but the power and ground wire is thick and soft rubber which is perfect compared to some of the more expensive garbage out there lol for the price this is decent quality and I'm happy with it. Easy to install it comes with zip ties and stuff for wire management the gauges are good and the insulation is good for running my subs in my car and the copper is nice and soft and multi strand and thick inside. I wish I had ripped my old kit out and used just this kit for my subs as its awesome stuff definitely going to grab this again for next time! It works great if you just wanna add some things in or change the wiring around or extend pieces where needed. Definitely would recommend getting heat shrink separate though as I don't think it comes with any. I got it a while ago so I can't remember if it came with a few small pieces or not but definitely way better than scoshe or however you spell it. Way better than Walmart garbage kits or AutoZone! Would buy again ! ... show more
Reviewed in the United States on January 5, 2025 by Garrett F.

  • Worked great each time!
I have bought this kit in the past, and each time I am impressed by the quality for the price. Has plenty of length for the cables, and all the hookups work every time. Nothing to complain about, and a great kit overall! Makes it easier also just for single sub hookups, along with just having the cables pre-cut and ready to go. ... show more
Reviewed in the United States on March 14, 2025 by Kittery

  • Fair price, perfect quality
It’s 100% true to what is said, once it’s warmer I’m gonna order this exact item for my Cummins like I did my evolution
Reviewed in the United States on February 16, 2025 by Brenden Yates

  • Outstanding quality for a great price. Shielding could b better, but still good.
This is a very good kit. I’m pleased with it and the price is right. RCA shielding isn’t great, so definitely keep the 12V power wire as far away from the RCA’s as possible. I do recommend this kit. Thanks!
Reviewed in the United States on December 30, 2023 by Dennis Schmahl

  • Longer main power wire than your average budget kit; decent quality
This is a decent kit if you need a main power wire that's longer than the typical 17ft these kits provide. The 4 gauge wire appears to be slightly under sized from what I'm used to, but I expected that. The accessories are decent and color coordinated, if that matters to you. The RCAs and speaker wire are good quality. The fuse block is of decent quality but not the best, the metal lugs have play in how they mount to the plastic bedding. The zip ties don't ratchet/hold at all. If I had more time I would have purchased a separate power wire, selected a different fuse block and other parts needed but I was in a time crunch. This is a decent kit for beginners who need the extra accessories and need the extra length for the standard 17ft kits. Most of the kits are similar quality in this price range until you jump up to the OFC kits that are more than double the price. ... show more
Reviewed in the United States on May 2, 2022 by imtylerb

  • Great product
Everything was great going on about a year now no issues
Reviewed in the United States on November 12, 2024 by Hunter

  • Power
Improved the quality and performance of my 6000W amp and dual 12s
Reviewed in the United States on April 19, 2025 by Commander Cody

  • Precise description
Correct length. Good connectors. Nice color. Works perfectly. Thanks!
Reviewed in the United States on April 4, 2024 by Armando

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for inventory...