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Rockford Fosgate RFK4I4 AWG Power & Signal Installation Kit

5.05 reviewsSee all reviews

Variants

4 AWG Power & RCA4 AWG Power & RCA2 variants

The Rockford Fosgate 4 AWG Power & Signal Installation Kit supplies the wiring and hardware needed for most amplifier installs. Cables feel solid and well insulated, installation is straightforward, and the in-line fuse is neatly mounted.

Buyer confidence

88%

Highlights

  • 1 Year Warranty
  • 4 AWG (21.1mm²) 1,862 strands
  • Includes appropriate wire termination hardware
  • Cables use 100% pure crystal-oxygen free copper (PC-OFC)

Key specs

Full specs
Battery PWR/GND Gauge
4 AWG
Speaker Wire Gauge
N/A
Dual Amp Installation Kit
No
Amplifier PWR/GND Gauge
4 AWG
Fuse Size
100 Amp
Fuse Type
MAXI

Key specs

Full specs
Battery PWR/GND Gauge
4 AWG
Speaker Wire Gauge
N/A
Dual Amp Installation Kit
No
Amplifier PWR/GND Gauge
4 AWG

Highlights

Overview
  • 1 Year Warranty
  • 4 AWG (21.1mm²) 1,862 strands
  • Includes appropriate wire termination hardware

Review highlights

Based on customer reviews

Complete, high-quality 4 AWG amp wiring kit

The Rockford Fosgate 4 AWG Power & Signal Installation Kit supplies the wiring and hardware needed for most amplifier installs. Cables feel solid and well insulated, installation is straightforward, and the in-line fuse is neatly mounted.

5 reviews5.0/5 averageUpdated Mar 15, 2026

What buyers praise

  • Includes all necessary wiring and hardware for amp installation
  • High-quality, well-insulated cables

What to watch for

  • Doesn't include long RCA (low-level) cables — you may need to buy those separately
Overview

A complete 4 AWG power and signal wiring kit that supplies power, ground, RCA signal and remote turn-on for an amplifier.

Best for

  • Installing a single car amplifier
  • Projects needing 4 AWG power and ground wiring
  • Setups requiring integrated RCA signal and remote turn-on wiring

Key points

  • Includes 17 feet of 4 AWG power wire and 3 feet of 4 AWG ground wire
  • Contains one 16-foot twisted-pair RCA cable for signal connections
  • Provides 20 feet of remote turn-on wire
  • Includes a maxi fuse holder and a 100 Amp fuse
  • Technology/notes: CTA-2015; includes fused distribution, RCA cables and power wire

Fit and use

Provides the wiring components and fuse protection commonly needed to connect an amplifier to a vehicle electrical system. Wire lengths are intended for typical single-amplifier installations; verify lengths against your vehicle and amplifier layout before starting.

What to know

Confirm that your amplifier's recommended wire gauge and fuse rating align with the kit's 4 AWG wiring and 100A fuse. The kit lists the included items and lengths — check these against your installation requirements and plan for any additional wiring or components you may need.

Highlights

Key features

  • 1 Year Warranty
  • 4 AWG (21.1mm²) 1,862 strands
  • Includes appropriate wire termination hardware
  • Cables use 100% pure crystal-oxygen free copper (PC-OFC)
  • Full Spec Cable meets or exceeds AWG (American Wire Gauge) requirements
  • CTA-2015
  • Includes Fused Dist.
  • Includes RCA Cables
  • Includes Power Wire
More info

Manufacturer details

4 gauge power, ground and signal installation kit for an amplifier.

Additional details

Kit includes 17 feet of 4 AWG power wire, 3 feet of 4 AWG ground wire, (1) 16 feet twisted pair RCA, Maxi fuse holder and fuse, 20 feet of remote wire, 100 Amp fuse.

Technologies
CTA-2015

CTA-2015

Rockford Fosgate cables conform to the CTA-2015 industry standard. The standard specifies the exact amount of

Includes Fused Dist.

Includes Fused Dist.

This amplifier kit includes fused distribution. It utilizes a stand-alone fuse holder that can be installed in a

Includes RCA Cables

Includes RCA Cables

This amplifier kit includes RCA patch cables. These are the necessary cables used to transfer low-level signal

Includes Power Wire

Includes Power Wire

This amplifier kit includes power wire by including necessary cable for both B(+) and GND(-) connections.

Specs

Specifications

6
Battery PWR/GND Gauge4 AWG
Speaker Wire GaugeN/A
Dual Amp Installation KitNo
Amplifier PWR/GND Gauge4 AWG
Fuse Size100 Amp
Fuse TypeMAXI
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