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Rockford Fosgate RFK8i

8-gauge amplifier power and signal wiring kit

64 Reviews | 1 question - 1 answer


Our take on the Rockford Fosgate RFK8i

This wiring kit does not include speaker wire, so you'll need to purchase that separately to complete your amp installation. This kit includes patch cables for a 2-channel or mono amp — you'll need to add cables for multi-channel amps.

Your amp needs big power wires in order to deliver top performance to your sound system. Rockford Fosgate's RFK8i amplifier power and signal wiring kit supplies everything you'll need to send power and input signals to amplifiers with fuse ratings of up to 60 amperes. Rockford Fosgate makes the 8-gauge cable from 100% pure crystal-oxygen free copper wire so you can count on maximum signal transfer.

Awesome kit! Came with everything I needed (aside from the speaker wire).

John, Guam

What's in the Box:

  • One 17' Power cable (8-gauge) in a red translucent jacket (has an in-line 60A fuse/fuse holder and a ring terminal on the battery end)
  • 3' Ground cable (8-gauge) in a translucent gray jacket (with a ring terminal on one end)
  • 16' Twisted pair RCA patch cord
  • 20' Turn-on lead in a blue jacket
  • Ten 4" wire ties
  • 1 Plastic grommet
  • 5 Plastic butt connectors
  • 6 Female quick slide connectors
  • 5 Male quick slide connectors

Product Highlights:

  • amplifier wiring kit
  • cables meet or exceed the American Wire Gauge specifications and requirements
  • 17 feet of 8-gauge power cable
  • 3 feet of 8-gauge ground cable
  • 20 feet of 18-gauge turn-on lead wire
  • one 16-foot twisted pair RCA patch cable
  • AGU fuse holder and 60-amp fuse
  • assortment of wire termination hardware and cable ties
  • warranty: 1 year
  • Our 60-day money-back guarantee

Rockford Fosgate RFK8i Reviews

Average Customer Review(s):

(64 Reviews)
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Hands-on research

Product Research


General Overview: This is a single amplifier wiring kit that includes the power and ground cables, turn-on lead, one pair of stereo RCA cable and accessories required to install one amplifier. Speaker wire is sold separately.

High Strand Power/Ground Cable: The power and ground cable are 100% Pure Crystal-Oxygen Free Copper (PC-OFC) and meet or exceed AWG (American Wire Gauge) requirements.

In-line Fuse Holder: The included in-line fuse holder attached to the power cable comes with a 60-amp AGU-type fuse.

Patch Cord: Twisted pair cable design is used for noise rejection, a split center pin helps secure the connections at both ends.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Jenny recommended in chat [ robert  Jun 16, 2017 ]
came with eveything i needed including patch cable [ Joshua  Jun 14, 2017 ]
The price seems right and I trust Crutchfield. [ David  Jun 01, 2017 ]
Good brand at good price... and it fits what I want. [ WILLIAM  May 31, 2017 ]
Talked to Allison on the tech line and she helped me get just what I needed. [ Brian  Apr 30, 2017 ]
I needed an amp wiring kit, and this came with RCA cables. Plus it was a little less expensive then buying the kit and RCA cables separately! [ John  Apr 28, 2017 ]
Good price been using Rockford since the 90's [ Stephen  Apr 27, 2017 ]
it was recommended by a crutchfield professional. [ MANUEL  Apr 25, 2017 ]
No need to shop anywhere else, the Crutchfield Name and Products you can trust. [ DEAN  Apr 22, 2017 ]
he picked it [ Ildelisa  Apr 12, 2017 ]
Everything i need all in one packade for the amplified sub i got [ R  Apr 12, 2017 ]
Great product [ william  Apr 09, 2017 ]
great reviews [ scott  Apr 06, 2017 ]
I chose this because it was a complete kit that I needed to wire a subwoofer and an amplifier. [ Easton  Apr 06, 2017 ]
Decent price [ Joseph P.  Mar 17, 2017 ]
I know its a great brand and will also pack a punch [ Josue  Mar 08, 2017 ]
I have a rockford fosgate r500xd1 mono amp for the same money I got name brand instead of crutchfield's brand. Muy bueno, great price for high quality product [ David  Mar 03, 2017 ]
Like the Rockford products [ Devin  Feb 23, 2017 ]
I went with this amp install kit because it includes everything to install the amp into the vehicle. The only thing it does not include is the speaker wire to connect to the sub but that can be found anywhere from a brick and mortar store to online. [ Carter  Feb 22, 2017 ]
Love Rockford Fosgate, always wonderful product [ Lance  Jan 06, 2017 ]
Great reputation and good experience with RF. [ JERRY  Jan 05, 2017 ]
To push my focals [ Justin  Dec 30, 2016 ]
Product reputation [ John  Dec 20, 2016 ]
Reputation and sales rep said it was a good idea [ Mark  Dec 15, 2016 ]
Recommended by my Crutchfield Advisor - David. [ Adam  Dec 13, 2016 ]
suggested by advisor [ Michael  Dec 01, 2016 ]
Top grade wiring kit [ RYAN A  Nov 26, 2016 ]
Included power and speaker cable. Was recommended with subwoofer purchase [ Martin  Nov 19, 2016 ]
Fosgate has been around a long time and has always had quality gear [ Norman  Nov 15, 2016 ]
i need wires [ Alexander  Oct 19, 2016 ]
for amp installation and discount [ Glenvall  Oct 02, 2016 ]
Rockford Fosgate is consistent with their quality, and definitely don't want to skip quality on a subwoofer setup for my sisters car [ Ken  Sep 30, 2016 ]
because they are the best! [ Daniel  Sep 13, 2016 ]
Main power cable length [ Alexander  Sep 06, 2016 ]
seems convenient and good reviews [ Normandy  Aug 06, 2016 ]
Because it was what we needed to install my son's equipment [ Wesley  Aug 04, 2016 ]
I had JL audio and rockford fosgate equipment installed in my Bullitt mustang. The sound was amazing, I will always roll with JL audio and rockford fosgate forever period!! [ CURTIS  Aug 02, 2016 ]
I chose this because of customer reviews and recommendations. [ Gregory S.  Jul 25, 2016 ]
Reliable, complete and compatible with the powered subwoofer I purchased. [ Christopher M.  Jul 24, 2016 ]
Good price and reviews [ Julio  Jul 24, 2016 ]
Because it's Rockford Fosgate. No other reason. [ BENJAMIN KEITH  Jul 15, 2016 ]
Extended warranty. [ STEVEN T  Jul 01, 2016 ]
To extend the warranty on the RF amplifier. [ Albino  Jun 28, 2016 ]
Because of Rockford's top notch reputation. [ Eric C.  Jun 04, 2016 ]
This kit is a good price. [ Margaret  May 19, 2016 ]
I chose this wiring kit for my vehicle due to having a 3' long ground cable. I really wish an off the shelf kit came with a 4'-5' ground so it it would be easier to find a nearby bolt to ground to rather than tapping new holes into the body. [ BRETT  May 16, 2016 ]
quality kit at a good price [ Kelly T.  May 08, 2016 ]
Ratings [ Jon  Apr 30, 2016 ]
Price was good for these outstanding cables. This kit came with all of the items that I needed to install my powered sub woofer. [ DAVID E  Apr 14, 2016 ]
Needed a new sub install kit and this looked to be of good quality and match my powered sub from fosgate. Also would extend the fosgate warranty of my sub for using this kit. (power wire is all copper not copper clad aluminum) [ Guest  Apr 02, 2016 ]
Choose the right install wiring for your product, particularly a sub. Dont' skimp or you will be sorry. Recommended by adviser. [ Andy  Mar 28, 2016 ]
Speaker and amp all in one, and matched [ Michael  Mar 27, 2016 ]
Ease of installation [ CHRIS  Mar 26, 2016 ]
easy [ JEFF  Mar 15, 2016 ]
Past experience [ Donald  Mar 10, 2016 ]
I wanted to make sure this kit was adequate for my installation [ Jeremy  Mar 08, 2016 ]
I love Rockford Fosgate [ Dalton Ryan  Mar 05, 2016 ]
Recommended by Abe Abe's Bio: [ Steve  Mar 05, 2016 ]
Love Rockforg Fosgate products [ ariel  Feb 27, 2016 ]
I accidentally ordered the 10 gauge and needed the 8 gauge and the kits are very similar and were recommended by the advisors on crutch field. [ Rafael  Feb 17, 2016 ]
This powered sub got good reviews, and through those reviews I believe I made the right choice. Rockford Fosgate is a reputable brand that I trust as well. [ Rodney  Feb 12, 2016 ]
Suggest on site and I need the wiring kit. If not I would have had to buy the kit at a local audio shop. [ Dennis  Feb 10, 2016 ]
I have used ROCKFORD FOSGATE products in the past and they have worked very well for me. Their kits are complete and have everything you need to do you your installation. Instructions are well written too! [ steve  Jan 21, 2016 ]
Way better deal than buying seperate. I love the way Crutchfield has everything you need at a click of the button. It's like they read my mind. [ Chad  Jan 12, 2016 ]
Because to me the top of the line that sounds real good and the last long [ Erik  Jan 09, 2016 ]
Rockford Fosgate has always been a trusted manufacture. [ Taylor  Jan 08, 2016 ]
needed for installation [ Christopher  Jan 06, 2016 ]
recommended by advisor, to make the install very simple [ Gregory  Jan 05, 2016 ]
This kit has all that I need to install the amp. Also, using a Rockford Fosgate wiring kit with a Rockford Fosgate amp extends the amp warranty by 1 year (subject to change). Cannot beat that! [ Brandon  Dec 23, 2015 ]
Rockford Fosgate has always been loyal in quality plus you get what you pay for. [ Steven  Dec 18, 2015 ]
Reputation and sale price! [ CRAIG  Dec 18, 2015 ]
Love Fosgate products [ Ronald  Dec 16, 2015 ]
To connect my amp. [ Matthew  Dec 16, 2015 ]
Looking for a Christmas present for my daughter and knew the Crutchfield gang wouldn't let me down! [ Stanley  Dec 15, 2015 ]
Good reputation and price drop made product comparable to Amazon's price. [ Steve  Dec 15, 2015 ]

1 question already asked

For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Jul 13, 2015 ]  Staff

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