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EFX 9-Wire Ultra Flex Speaker Wire

All-in-one cable for speaker and amp installation — useful for bypassing factory amplifiers (12 feet)

Item # 1429WC1812

If you're keeping your factory receiver and installing an aftermarket amp and four speakers, Scosche's EFX 9-Wire...

If you're keeping your factory receiver and installing an aftermarket amp and four speakers, Scosche's EFX 9-Wire...

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Item # 1429WC1812

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$24.99 each

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Drew
Need help?
Contact our Virginia-based experts.

About the EFX 9-Wire Ultra Flex Speaker Wire

A time-saver

If you're keeping your factory receiver and installing an aftermarket amp and four speakers, Scosche's EFX 9-Wire Ultra Flex speaker wire makes running wire as easy as it gets. They bundle nine individually-jacketed, extra-strong wires into one handy cable with a rugged PVC outer jacket. That's enough to wire four speakers, with one wire reserved for your amplifier's turn-on function.
EFX 9-Wire Ultra Flex Speaker Wire

A time-saver

If you're keeping your factory receiver and installing an aftermarket amp and four speakers, Scosche's EFX 9-Wire Ultra Flex speaker wire makes running wire as easy as it gets. They bundle nine individually-jacketed, extra-strong wires into one handy cable with a rugged PVC outer jacket. That's enough to wire four speakers, with one wire reserved for your amplifier's turn-on function.

Color-coded

Each of the nine wires is color-coded to match the aftermarket standard for wiring, and Scosche uses tin-plated, oxygen-free copper to prevent oxidation and improve overall reliability. Run the EFX 9-Wire Ultra Flex once, and move on! You'll have a kickin' system by lunchtime.

Check out Connecting your speakers to an amp to learn more about using your factory speaker wiring with your amplifier.

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Product highlights:

  • 9 individually jacketed wires enclosed in outer PVC jacket
  • includes wire for 4 speakers and an amplifier turn-on wire
  • color-coded to match standard aftermarket wires
  • tin-plated, oxygen-free copper wire
  • 18-gauge wire
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # EFXS9WC18-12B

What's in the box:

  • One 12' Length of nine conductor wire

Customer reviews

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EFX 9-Wire Ultra Flex Speaker Wire reviews

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97 reviews

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Crutchfield response

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More details on the EFX 9-Wire Ultra Flex Speaker Wire

Stacey B.

Product Research

Features

Overview: Nine individually covered 18-gauge wires are housed inside the outer jacket. The wire colors match aftermarket color codes:

  • White
  • White with a black stripe
  • Gray
  • Gray with a black stripe
  • Green
  • Green with a black stripe
  • Purple
  • Purple with a black stripe
  • Blue

Outer Jacket Diameter: 0.35"

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
simplicity, plain & simple [ J  Aug 29, 2019 ]
A
instead of running speaker wire everywhere like a beta, you use this wire to go from the amp to the radio so you can hijack signal for your speakers you want to amplify. [ david  Apr 17, 2019 ]
A
Appears to be good quality and fit the bill. Also recommended by my advisor. [ Christoph  Apr 11, 2019 ]
A
The sales rep suggested this. [ Jonathan  Dec 21, 2018 ]
A
Advisor recommended. [ Steven  Sep 27, 2018 ]
A
To extend the location of my Amp [ Fadi  Aug 30, 2018 ]
A
used it before - is great! [ Tim  Aug 06, 2018 ]
A
It looks like it would simplify my amplifier installation. [ Naipaul  Jul 26, 2018 ]
A
Wiring factory receiver to an amp. [ Clinton  Jul 21, 2018 ]
A
Compact wiring to integrate aftermarket amp in to factory wiring. [ G  Jun 08, 2018 ]
A
Perfect to relocate factory amp. [ Leroy  May 27, 2018 ]
A
Multiple wires makes connection between amp and factory speaker harness simple. [ Kelly  May 26, 2018 ]
A
Wolf suggested [ Carl  Mar 13, 2018 ]
A
Mini amp wires arnt long enough [ Russell  Mar 07, 2018 ]
A
NONE of your Sound Bar info says anything about speaker wire. Had to find this on my own, one of your advisors was of no help whatsoever. [ EDWIN D  Jan 20, 2018 ]
A
convenient flexibility. recommended by a friend [ mary  Nov 23, 2017 ]
A
It simplifies speaker wiring from amp to factory wiring. Instead of having to install all new speaker wires to each speaker. [ Iverson  Nov 20, 2017 ]
A
I'm redoing my whole audio system in my car and I'm adding a 5 channel amp with a subwoofer. I didn't want to run extra speaker wire to each speaker so I can use this 9 wire speaker set to run from the new amp to my stereo connections and reuse the original speaker wires out to the speakers. [ Dylan  Sep 04, 2017 ]
A
tryingto hookup my ampliirto the speaker onthe radio so it in magazine [ nelson  Mar 24, 2017 ]
A
So I can route a new Kenwood Amp (X801-5) into the factory harness of my 16 Tucson. [ Chris  Feb 27, 2017 ]
A
To make it easier to wire the 4 channels for the door speakers [ michael  Feb 14, 2017 ]
A
perfect wire set up to make it easier to bypass factory amp. [ Joseph L.  Jan 21, 2017 ]
A
for easy amp install [ shaun  Nov 21, 2016 ]
A
to patch into car speaker harness from amplifier [ Danielle  Nov 20, 2016 ]
A
For after market speakers [ Dave  Jul 21, 2016 ]
A
Makes for a quick and clean install of any amp. [ Mitchell  Jun 26, 2016 ]
A
Installing an Amp [ Robert  May 07, 2016 ]
A
I'm running my speakers off the head units power now but will be installing a 4 channel amp under the seat , this will be the perfect solution for a clean wire run from the amp to the original speaker wires behind the radio [ STEVEN  Apr 07, 2016 ]
A
I felt running this group of speaker wires to head unit would be neater and easier. [ John  Mar 07, 2016 ]
A
Adding aftermarket amplifier's to my factory radio system. I changed my door speakers and I'm adding sub woofers to the factory radio. This 9 wire harness takes out the stress of running individual wires and they are already color coded so I know which speaker and + or - side of the speaker they go to. [ Ralph  Nov 22, 2019 ]
A
To ad an dsp/amp to my stock system. [ gary  Oct 08, 2019 ]
A
I needed to run the four channels coming out of the factory head unit to the amplifier that will be power the component setup I ordered. It is impossible to change the head unit on my 2019 Accord Sport so this was the next best thing. JL Audio is the way to go. [ Tucker  Oct 01, 2019 ]
A
What I need to hook up my LC7i (LOC) to my factory head unit, and to send signals to head unit from amp, retaining all original wiring in doors, etc. [ William  Sep 12, 2019 ]
A
Advised to [ Daniel  Aug 17, 2019 ]
A
Needed this to wire up AudioControl dsp to my base radio setup in a 2015 mustang gt [ Eric Tran  Jul 25, 2019 ]
A
Because you have it. No one else does [ GREG  Jul 20, 2019 ]
A
Because this item will be make my install more easy and efficient [ Eduardo  Jul 11, 2019 ]
A
Makes the job a trillion times easier, and looks a lot cleaner. [ jamison  Jun 25, 2019 ]
A
I want my installation to be as neat and painless as possible! This seems like a good place to start. [ Joseph  Jun 20, 2019 ]
A
Having all the wires in one jacket should make running them from front to back much simpler. [ jeffrey  May 04, 2019 ]
A
easier than using four 2 wire connections from amp to factory wiring for speakers. Also has on/off wire for amp. [ rodney  Apr 12, 2019 ]
A
I bought this so I could connect my new amp to my stock car radio. [ Christopher  Apr 08, 2019 ]
A
Using the factory radio and didn't want to run four pairs of speaker wire to my recently installed amp. This cut down on the spider web behind the dash to give the installation a clean professional look. Also I didn't have to deal with a mix up between signal wires and speaker wires. [ G  Mar 17, 2019 ]
A
To avoid having to run 4 separate wires from my speaker harness [ Ryan  Feb 15, 2019 ]
A
Tech support suggests that [ steve  Feb 10, 2019 ]
A
Speedy and fast installation. [ Arbs  Feb 07, 2019 ]
A
All speaker wires, together, and shielded. I'm a man of practicality. This wire bundle is as about as practical as you can get for a car audio install. A little pricey, but time is money, right? Well, this will definitely save me some time. [ JOSH  Jan 27, 2019 ]
A
To install amplifier to power speakers and keep factory receiver in truck [ Daniel C.  Jan 03, 2019 ]
A
Provides a clean install solution [ Joseph  Jan 02, 2019 ]
A
Super easy and effective way to run speaker and turn on lead wire from behind the head unit to the amplifiers and vice/versa! [ Charles  Nov 13, 2018 ]
A
I originally used individual speaker wires, bound together, for my 4 channel amp install. Routing the wires was difficult and I wasn't satisfied with the end product, so I'm gonna give this a try instead. [ coreyallgeier  Oct 21, 2018 ]
A
To go from JL FiX86 to the back of my radio for signal [ John  Sep 24, 2018 ]
A
Ease of installation [ Julie  Aug 04, 2018 ]
A
It was recommended that I order it [ David  Jul 16, 2018 ]
A
Because it is OFC. [ Joshua  Jun 29, 2018 ]
A
Installing a 5-Channel Amp on a factory head unit and wanted to make the installation as simple as possible. One wire to run instead of multiple. [ James  Jun 26, 2018 ]
A
Maverick picked the wire for me [ ALFRED  May 29, 2018 ]
A
bi passing a factory amy [ Derek  May 04, 2018 ]
A
Convenient to have all speaker wires in one jacket to run from head unit to amp in rear of vehicle [ Jason  Apr 29, 2018 ]
A
ease of use with stock head unit [ ALAN  Apr 18, 2018 ]
A
To connect LOC to factory harness and amp [ Mark  Mar 17, 2018 ]
A
For ease of installation of mini amp for door speakers 75watts per channel or less. Seems like a lot less fuss to be able to wire this to the new harness and then run to the amp for use w/ OEM speaker connections. [ Daniel  Feb 15, 2018 ]
A
Makes adding an amp super easy. [ Bruce  Feb 11, 2018 ]
A
Makes my life easier! [ Joseph fuller  Jan 06, 2018 ]
A
Running wires from amp back to the head unit harness to connect to the factory speaker wire. [ Christine  Jan 02, 2018 ]
A
I bought this product because I am adding an amp for my interior speakers. This product will make my installation easier and cleaner. [ Dwayne  Dec 23, 2017 ]
A
Need 2 and thought I could use 2 10 feet [ joah  Dec 12, 2017 ]
A
the product specialist picked this out because we had a factory stereo. This is supposed to help connect it easier. [ corey  Dec 11, 2017 ]
A
So Easy [ TROY L  Nov 25, 2017 ]
A
needed for install [ Stephen  Nov 15, 2017 ]
A
Power amp back to dash speaker wires [ TYLER S  Nov 15, 2017 ]
A
I'm using this to send line level input to my Audio Control processor. [ Dennis  Oct 29, 2017 ]
A
Needed to run a 5ch amp and these make it easier to do so. [ Zachary  Oct 26, 2017 ]
A
connect amp to factory speaker wires [ Brent  Oct 04, 2017 ]
A
Ease of installation. [ Pete  Sep 01, 2017 ]
A
I don't know [ JACOB  Aug 22, 2017 ]
A
Run the Speaker signal from the amp. [ Michael  Jul 31, 2017 ]
A
To connect all speakers wires to one harness without the need to run new wires for speakers. [ MIGUEL  Jul 19, 2017 ]
A
Planning to run from the stereo to a 4-channel amp in the trunk with this, then use existing wire originally for the rear deck speakers to send power to the front door speakers. Crazy? Yes. But so crazy it just might work. [ Luke  Jul 02, 2017 ]
A
To bypass factory amp [ Weekend wrench guy   Jun 26, 2017 ]
A
Cleaner install [ Richard  May 20, 2017 ]
A
To connect my speakers easier from the dash instead of having wires running to every speaker location [ Samuel  May 17, 2017 ]
A
To keep the harness neat. And basically. It just makes sense. One wire to run to the amp? Better than NINE individuals. [ Frank  May 04, 2017 ]
A
Recommended [ Dannie  Apr 14, 2017 ]
A
To make connecting factory radio to aftermarket DSP easier [ Scott  Apr 13, 2017 ]
A
Convenience [ James  Apr 12, 2017 ]
A
Need to take the signal from my OEM head unit to an LOC in the trunk. Smartest way to do that! [ RENEL  Mar 24, 2017 ]
A
I chose this to make wiring the amp to the stock radio easier. One wire vs 9. [ THEODORE  Mar 18, 2017 ]
A
Cleaner cable runs [ William Ortiz  Mar 11, 2017 ]
A
Helps simplify the installation process, cleaner neater install. [ WILLIAM S  Jan 19, 2017 ]
A
For it's convenience [ MIRIAM  Jan 15, 2017 ]
A
Really easy to run, connect, and hide wires as they are all provided in one [ JEREMIAH  Jan 05, 2017 ]
A
Easy to wire up and amp driving four speakers mounted in the rear when trying to connect two the speaker leads in the dash. Handy to have amp turn on lead in the bundle! [ A  Dec 23, 2016 ]
A
for ease of installation for my application. Item was recommended by Daniel. [ Lafayette  Dec 19, 2016 ]
A
Needed to wire a 4 channel amp. Worked great! [ Paul  Nov 23, 2016 ]
A
Run from amp to harness in dash [ JONATHAN L  Nov 19, 2016 ]
A
Great product , made wiring up a vehicle very easy [ Paul  Oct 29, 2016 ]
A
Suggested by Maverick and I have had a wonderful experience with Crutchfield in the past. Maverick was very informative and very helpful. [ ROBERT  Oct 22, 2016 ]
A
Makes sense [ Cameron  Sep 12, 2016 ]
A
This makes it so much easier and quicker to installing amps. [ Luther  Sep 10, 2016 ]
A
This seemed to be the easiest way to feed all four speaker level signals from my factory head unit to the inputs of the Alpine PWE-S8 powered sub. One cable will run from the dash to under the passenger seat where the Alpine wiring harness will plug in. The 18 AWG wire should be plenty sufficient for this purpose. I ordered 20 ft since it was only a bit more expensive than the 12 ft option, though I expect to use only 8 ft or so. The rest will be handy for another project someday. [ Eric  May 15, 2016 ]
A
Need to connect HU to amp under drivers seat. Speaker level input from back of the HU to amp, then amp back to speaker wires behind the HU. Only slightly worried about the power level through 18awg wire. All 4 ohm speakers (including the sub) with the sub having 12awg wire from amp to speaker box. [ Benjamin  Apr 03, 2016 ]
A
Great choice easy and simple install [ Cameron  Mar 25, 2016 ]
A
the csr told me i would need this to hook up the audio control LC6i [ Ollie  Mar 18, 2016 ]
A
Simplicity of installation and less mess of wires to run [ Dustin  Feb 25, 2016 ]
SHOW MORESHOW LESS

5 questions already asked

Q
Would this work with an aftermarket radio? I want to connect an amp to it.
[ Chris  Oct 06, 2017 ]
1 answer
A
The much better way to connect an aftermarket stereo to an aftermarket amplifier is to use RCA cables from the stereo's pre-amp outputs. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service: https://www.crutchfield.com/support/ContactUs.aspx
[ Ryan  Oct 11, 2017 ]  Staff
Q
So there's 9 different colored wires 2wires to a speaker and they travel to the receiver? They are all bundled in one plastic tube which I cut & take off so they can be separated? Since I don't have an amp do I have to use that wire? And all I gotta do is match them to the same color wires on my receiver?
[ Yungsmokey  Feb 17, 2017 ]
3 answers
A
If I'm reading this correctly, you're asking if you have to use all the wires. You can cut the outer wrap to expose the inner 9 wires and only use the ones you need.When I did my stereo project, I used separate power and ground wires along with this 9-wire cable.
[ JARED  Feb 27, 2017 ]
A
The bundle of wires is a easy way to hook up a amp to a stock receiver with no RCAs. It is a four speaker set up. four + and four - and one to turn on the amp a remote wire. If your not using a amp and need to run new speaker wires then yes you will have to separate the wires. These wires are probley not going to match your stock receiver or aftermarket. Sometime they match but of the time no.
[ Derek  Feb 18, 2017 ]
A
You will use only 8 wires that should be the same color for your stereo. But I would double check. The blue wire which I beleive your talking about won't be used unless you were hooking up an amp. That would turn your amp on when the head unit powers up.
[ craig  Feb 17, 2017 ]
Q
How many watts does the 9-wire 18 gauge set of speaker wire handle?
[ Will  Jul 01, 2019 ]
2 answers
A
I used this wire to send audio output from my car stereo to my 250watt amp. The run was about 12'. It worked perfect, and I highly recommend. Since it was only audio signal output it was only handling 45watts per wire
[ TRAVIS  Jul 09, 2019 ]
A
I'm putting 100rms through each channel with no problems.
[ JAMES D  Jul 09, 2019 ]
Q
can this connect aftermarket head unit to factory bmww dsp amp?
[ Galo  Apr 02, 2019 ]
1 answer
A
As long as the amp uses regular speaker wire connections you should be able to use that 9-wire.
[ Cosmo  Apr 17, 2019 ]  Staff
SHOW MORESHOW LESS

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