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Speaker Wiring Harnesses

For select 1995-up vehicles

15 Reviews | 1 question - 1 answer

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Item # 12071040

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These harnesses allow you to plug your new speakers into the factory connectors present in your vehicle's speaker openings.

These harnesses allow you to plug your new speakers into the factory connectors present in your vehicle's speaker openings.

Note: Some aftermarket speakers have terminals that are wider than this harness's slide-on connectors. You may need to widen the harness's female slide-on connectors, or use the slide terminals that may be included with the speakers. If you need to connect your new speaker's connectors to the Crutchfield harness, soldering is best, and crimping is also very popular - see "Accessories."

Includes Crutchfield's 60-Day Total Satisfaction Guarantee

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

What's in the Box:

  • 2 Speaker harnesses

Speaker Wiring Harnesses Reviews

Average Customer Review(s):

(15 Reviews)

Speaker Wiring Harnesses

Anonymous from Savannah, GA on 2/26/2017

2000 Toyota Corolla
Crutchfield Customer Review (What's this?)

Very necessary



Speaker Wiring Harnesses

Anonymous from Hopewell,VA on 1/26/2017

2003 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Wrong harness for my 2003 Tacoma xtra cab rear speakers.



Crutchfield response on January 31, 2017 We're sorry you're having issues with your harness. Our tech support team will contact you to make sure we get you the correct harness for your vehicle.

Speaker Wiring Harnesses

Rob P from Flint Mi on 5/19/2016

2013 Toyota FJ Cruiser
Crutchfield Customer Review (What's this?)

Worked great with factory connection.

Pros: Plug n play

Cons: Did change out connectors since went with aftermarket speakers

Speaker wiring harness

Randy C. from Nashville, TN on 5/14/2016

1998 Toyota Corolla
Crutchfield Customer Review (What's this?)

Perfect fit

Pros: Easy and quick install, no complaints


The epitome of plug and play

Anonymous from Hollywood, Fl on 8/17/2015

2007 Toyota FJ Cruiser
Crutchfield Customer Review (What's this?)

Normally, I cut wires and use a crimp connecter. The space the factory wires were in had, zero slack and hard to reach. 8 bucks totally beats a probably half hour of aggro vat ion and swearing. They Fit perfectly, Zero issues

Pros: Easy to use. Fits factory harness. No cutting.


A tad short

Terry from Cedear Rapids, IA on 9/10/2014

1996 Toyota Tercel
Crutchfield Customer Review (What's this?)

I found wires to be about 4" too short for my particular vehicle. (Have advised Crutchfield of this already.) Rather than wait for a replacement I just soldered in the extra wire, which worked out fine.

Pros: Good quality hardware. Fit car & speakers perfectly.

Cons: 4" too short.

wiring harness

Scott from Straughn In on 8/26/2014

1999 Toyota Celica GT
Crutchfield Customer Review (What's this?)

Plug into your cars wiring harness and connect to your speakers Bam

Pros: Fast and easy and no cutting

Cons: none

Didn't expect it

Gabe from San Antonio on 2/23/2014

2004 Toyota Tacoma
Crutchfield Customer Review (What's this?)

I had to use the wireing harnes off the old speakers an splice them with the new speaker wire cause the new adaptor didn't fit the old female plug



Works as they should

Jay from Bend, OR on 2/13/2014

2001 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Does just what it is supposed to. Works great.

Pros: Works good. Easy to use.

Cons: None

Worked great

Sam from Bridge City, TX on 10/16/2013

2001 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Fit perfect without cutting wire

Pros: Crutchfield

Cons: Non

Perfect Fit

DaveM from Texas on 8/24/2012

1999 Toyota Corolla
Crutchfield Customer Review (What's this?)

Fit perfectly on my 99 Corolla (plugged right in without problem). It would have been helpful to have the wires a little longer, but it wasn't a bit deal.



Needed to be modified

wmasterson from healdsburg, ca on 1/26/2012

2004 Toyota Tacoma
Crutchfield Customer Review (What's this?)

The alignment ridge was on wrong side. I ground it off and it worked fine.

Pros: Worked

Cons: Had to be modified

did not work

ridefast from Albuquerque, NM on 10/14/2010

Crutchfield Customer Review (What's this?)

Great Idea but this item did not work, I had to cut the plastic plug off to make this work. I have a 2002 Tacoma.



Not quite right

Richard from Denver, CO on 7/6/2010

2004 Toyota Tacoma
Crutchfield Customer Review (What's this?)

This harness does not fit my 04 Toyota Tacoma xtra cab rear speakers. There is no harness for the front, and these almost fit the back, but the positioning tab is on the bottom, where as the factory harness has it on the side. The description says '95+, but somewhere along the line they changed. Also, they are a bit short, and would not allow me to pop the connector back into the hole in the body where it was originally. I filed the tab off, and duct taped the harness to the body instead and it worked fine.



Darn those spare parts!

Kelly from The top of California on 3/23/2009

2001 Toyota Tacoma
Crutchfield Customer Review (What's this?)

This thing is great except for one thing. After tearing my 01 Tacoma apart on a Friday afternoon, I realized this plug will NOT fit the harness in the truck. I called tech support (EXCELLENT!) and Allen emailed my some photos to solve the problem. As it turns out, Toyota used the speaker harness for an 00 on my 01. The difference between the two was useless. I'm not sure why Toyota even changed it. I simply cut the old speaker harness and Crutchfields in half and spliced them together. Couple cuts, some crimping and was ready to roll! If you're doing an 01-04, take off the seatbelt retaining bolts along with all the other parts that you need to. It will make life so much easier if you do! They're easy to get to and fairly simple to get off (14 mm socket).




Hands-on research

Product Research


Speaker Harness: These speaker harnesses prevent you from having to cut your vehicle's factory speaker plugs when replacing your factory speakers with aftermarket car speakers. The speaker harness features two female quick-slide connectors on one end to attach directly to your new aftermarket car speakers & a proprietary Molex connector on the other end that connects to your vehicle's factory speaker plug.

Quick-Slide Connectors: The speaker harness is equipped with a large (positive) & small (negative) female quick-slide terminal. These quick-slide terminals fit directly onto most aftermarket car stereo speaker terminals (slight crimping may be required). In rare cases that the quick-slide terminals do not fit your car speaker terminals, you will need to solder the speaker harness to your aftermarket speaker's terminals or replace the quick-slide connectors on the speaker harness with the correct size terminal.

Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability.

Quick-Slide Terminal Measurements: The positive female quick-slide terminal measures 0.205" (inner width), while the negative female quick-slide terminal measures 0.115" (inner width).

Wire Code Chart: Two identical speaker harnesses are included.

Wire Color Function
White Positive
Black Negative

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?

It was included but it will help ease of installation. [ Patrick  Dec 17, 2016 ]
Included [ Rawn  Sep 22, 2016 ]
Easy for installation [ Fred  Sep 03, 2016 ]
For my car to have a better sounding experience [ Wilbert E. Mald  Aug 09, 2016 ]
I bought this harness so I wouldn't have to splice into the factory wiring, plus it was free and made the installation a lot easier. [ Gianpaolo  Jun 04, 2016 ]
They are packaged with the speakers based on my car. [ Patrick  May 05, 2016 ]
Makes things easy [ GREG  Apr 25, 2016 ]
Recommendation from the Toyota FJ Cruiser online forum. [ LARRY  Feb 12, 2016 ]
u guys are the only one that have this specific harness [ patrick  Jan 22, 2016 ]

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  Jan 18, 2015 ]  Staff

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