OVERVIEW

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.

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A time-saver

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

Featured review

Great product with super quality! Made installing a signal processor and 2 Amps seamless and easy. Without this wire setup, I would have had to take apart half my car to run wires. I'll never look back after using this!

Paul from Land O Lakes, FL

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Customer Q&A

How many watts does the 9-wire 18 gauge set of speaker wire handle?

I'm putting 100rms through each channel with no problems.

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REVIEWS

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EFX 9-Wire Ultra Flex Speaker Wire reviews

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103 reviews

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DETAILS

Researched by Crutchfield's 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"

ACCESSORIES

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Q&A

5 questions already asked

Would this work with an aftermarket radio? I want to connect an amp to it.

[ Chris Oct 06, 2017 ]

1 answer

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

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 ]

4 answers

If you are not using an amp and are wiring a receiver to speakers wether aftermarket or factory you do not need the EFX 9 speaker wire. You should be able to use the factory wiring

[ ROY Dec 21, 2019 ]

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 ]

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 ]

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 ]

The photo is of copper wire. I was under the impression that Oxygen Free Tinned Copper is silver in color. Can you clarify why the picture is different?

[ scottm Aug 21, 2019 ]

1 answer

Yes it's copper and it's a nice space and time saver

[ TROY L Aug 21, 2019 ]

How many watts does the 9-wire 18 gauge set of speaker wire handle?

[ Will Jul 01, 2019 ]

2 answers

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 ]

I'm putting 100rms through each channel with no problems.

[ JAMES D Jul 09, 2019 ]

can this connect aftermarket head unit to factory bmww dsp amp?

[ Galo Apr 02, 2019 ]

1 answer

As long as the amp uses regular speaker wire connections you should be able to use that 9-wire.

[ Cosmo Apr 17, 2019 ] Staff

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