Metra 71-039C Speaker Wiring Adapters

Work with select 1990-up vehicles — connect new speakers to factory wiring plugs

Item #: 12071039

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Metra 71-039C adapters

These harnesses allow you to plug your new speakers into the factory connectors present in your vehicle's speaker openings. Two adapters are included for one pair of speakers.

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-supplied harness, soldering is best, and crimping is also very popular - see "Accessories."

Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if these adapters are compatible with your vehicle. Warranty: 60 days.

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

Hands-on research

What's in the box?

Download owner's manual

  • 2 Speaker harnesses
  • Instructions

Product Research

Features

Crutchfield Speaker Harness: Crutchfield speaker harnesses prevent you from having to cut your vehicle's factory speaker plugs when replacing your factory speakers with aftermarket car speakers. The Crutchfield 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 Crutchfield 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 Crutchfield speaker harness to your aftermarket speaker's terminals or replace the quick-slide connectors on the Crutchfield 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 Crutchfield speaker harnesses are included.

Wire Color Function
White Positive
Black Negative

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific type of vehicle.

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 open the box, verify contents, 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.

Metra 71-039C Speaker Wiring Adapters Reviews

Average Customer Review:

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Metra 71-039C Speaker Wiring Adapters

Written By Anonymous, kent washington on Wednesday, December 17, 2014

Worked for my 2013 challenger

Pros: They work!

Must have!!

Written By Josh, Hewitt, Tx on Monday, December 15, 2014

Crutchfield Customer Review (What's this?)

Used these to install aftermarket Kicker 3.5's in the dash of my 2013 Ram 1500. These are a must because there isnt much room to wire new speakers in the dash and these make it plug and play. I have these on all the speakers in my truck.

Metra 71-039C Speaker Wiring Adapters

Written By jonny, big bear lake, ca on Tuesday, December 09, 2014

Crutchfield Customer Review (What's this?)

Does what it says, makes it easy to install after market speakers with factory wiring

easy as 1,2,3

Written By Millan E., Houston on Wednesday, November 19, 2014

Crutchfield Customer Review (What's this?)

Makes installation as easy as possible without cutting or crimping any wires

Pros: Fast and easy installation without cutting or crimping any wires

Cons: May have to adjust the pins a little bit to match the factory harnesses

Perfect fit

Written By 6, NJ on Friday, October 24, 2014

Crutchfield Customer Review (What's this?)

Great plus. Made wiring so simple in my 2009 dodge ram.

Pros: Made wiring simple

Cons: none

Must Have !

Written By Johnny G, Oswego, IL on Thursday, September 25, 2014

Crutchfield Customer Review (What's this?)

Great product, makes install so easy and Crutchfield throws these in FREE !

Pros: Great product, makes install so easy and Crutchfield throws these in FREE !

great product

Written By matt. s, ca on Friday, September 19, 2014

Crutchfield Customer Review (What's this?)

I like these alot..makes it so easy to connect aftermarket speakers!

Adapters

Written By Adapters, Woodbury, MN on Saturday, September 06, 2014

Crutchfield Customer Review (What's this?)

Made the installation easier.

Perfect fit

Written By Dcjae, Torrance, CA on Monday, July 21, 2014

Crutchfield Customer Review (What's this?)

Exact fit for '06 Jeep Grand Cherokee dash speaker wires. Made replacing the speakers a 5-minute process. As always, the Crutchfield team included the correct accessory

Pros: Perfect fit

Cons: None

Exactly what I needed

Written By d, Florida on Saturday, June 28, 2014

Crutchfield Customer Review (What's this?)

Exactly what I needed for the replacement dash speakers in my 2014 Ram 1500 to connect to the factory wiring. Excellent built quality.

Metra 71-039C Speaker Wiring Adapters 2012 Ram

Written By Douglass, California on Friday, June 27, 2014

Crutchfield Customer Review (What's this?)

I recently purchased some kicker speakers for my 2012 Ram 1500 Quad Cab, and Crutchfield included these as park of the package. I did not use the female clips to connect to the speaker's tabs. I removed them and soldered the wires directly to the speaker tabs, then used heat shrink tubing to protect and seal. The wire was good length, and plugged perfectly into the factory wire harness.

Pros: Works perfect with factory wire harness

Cons: none

Metra 71-039C Speaker Wiring Adapters

Written By HWW, Vancouver on Monday, May 19, 2014

Crutchfield Customer Review (What's this?)

Snapped in to my OEM adapter with ease

Pros: Makes for an easy install

Cons: None

Metra 71-039C

Written By E,Rios, Bronx,ny on Tuesday, April 15, 2014

Crutchfield Customer Review (What's this?)

Plug worked great on factory harness

Pros: Great fit on factory harness

Cons: None

2008 Dodge Ram

Written By Sypert007, Silverhill, Al on Saturday, March 29, 2014

Crutchfield Customer Review (What's this?)

Very easy to use.

Pros: Everything was so simple.

Cons: None

Metra 71-039

Written By Anonymous, Orange County, CA on Monday, March 24, 2014

Crutchfield Customer Review (What's this?)

Made installing my Kicker KS35s into my 2014 Ram 1500 a piece of cake.

Pros: No fuss... no muss... no coconuts.

Cons: weren't free, oh wait, they were.

Metra 71-039C Speaker Wiring Adapters

Written By Jason D, Shreveport, LA on Tuesday, March 11, 2014

Crutchfield Customer Review (What's this?)

Couldn't be easier. No splicing or cutting involved.

Pros: Ease of use, plug-n-play

Cons: None

Metra 71-039C Speaker Wiring Adapters

Written By Anonymous, Danville, IL on Wednesday, February 19, 2014

Crutchfield Customer Review (What's this?)

These are worth the money to keep from hacking up your factory wiring. They are super easy to install, just make sure you get the ones specific to your make/model of vehicle.

Pros: Keep you from hacking up your factory wiring. They also give you a little bit of extra wire to work with, the factory wires are kinda short.

Cons: none

Works great!!

Written By Nick, Spartanburg, SC on Monday, February 17, 2014

Crutchfield Customer Review (What's this?)

A must have if you are replacing oem speakers on front dash of 2014 Ram 1500. Existing speaker wires are very short and in an awkward place to reach and this adapter made the installation easy.

Pros: Easy to use.

Cons: none

Metra 71-039 Speaker Wiring Adapters

Written By Kathy P., Chesapeake, VA on Saturday, January 04, 2014

Crutchfield Customer Review (What's this?)

This worked on my son's 2000 Mazda Protege. We had ordered another one but it did not fit; so glad I found this site. This item fit perfectly. We had the rear speakers installed in no time! Thank you Crutchfield!!!

Pros: Item was easy to install; fit perfectly.

Cons: None.

Metra 71-039 Speaker Wiring Adapters

Written By K.WAT, Worcester,MA on Wednesday, December 25, 2013

Crutchfield Customer Review (What's this?)

Easy install you cant ask for anything better.

Pros: Too easy!

Cons: detailed list of all vehicles they are compatible with in the description

easy

Written By dave, valaite, ny on Monday, December 23, 2013

Crutchfield Customer Review (What's this?)

Made hooking up dash speakers for 2013 ram very simple.

Metra 71-039C Speaker Wiring Adapters

Written By Anonymous, clinton, ms on Thursday, December 12, 2013

Crutchfield Customer Review (What's this?)

way better than having to cut wires

Pros: good fit

Cons: none

Makes installation a breeze

Written By Jestazed, Silverthorne, CO on Wednesday, November 20, 2013

Crutchfield Customer Review (What's this?)

Bottom line, these make your installation a breeze. No cutting of the factory wiring harness!

Pros: ease of install!

Cons: none.

Nice connectors

Written By Greg, Columbus, GA on Sunday, November 17, 2013

Crutchfield Customer Review (What's this?)

What can you really say about these? The do what they are supposed to do. Connect aftermarket speakers to factory wiring.

Makes for easy speaker install

Written By SMN, MT on Tuesday, November 12, 2013

Crutchfield Customer Review (What's this?)

The crimped on speaker connectors did not fit on the Rockfordfosgate speakers I installed. Easy fix, but annoying none the less.

Pros: makes speaker install simple

Cons: Not compatible with Rockfordfosgate?

Metra 71-039 Dodge Ram 2500 speaker wiring adapters

Written By Chris, Port Bolivar,Texas on Friday, September 06, 2013

Crutchfield Customer Review (What's this?)

AWESOME no wire cutting and splicing, just plug and play

Pros: easy use

Excellent speaker wiring adaptors

Written By Todd H., Milwaukee, WI on Thursday, August 29, 2013

Crutchfield Customer Review (What's this?)

Ordered these adapters for the dash speakers on a 2013 Chrysler 300 . I found that these also fit the rear door 3.5" speakers as well ( there was no application listed for the rear door speakers on this vehicle). The connectors mated up perfectly with the factory harness and polarity was correct ( white lead is the wider "+" terminal on the speaker). I chose to solder mine on to the speakers but the supplied crimped on push type connectors seemed to be high quality.

Pros: Speakers are removable without having to cut wires - Don't have to hack original factory harnesses.

Cons: none

wiring adapters

Written By Tony, Silver Lake il. on Tuesday, August 27, 2013

Crutchfield Customer Review (What's this?)

Makes for an easy and clean install.

Pros: easy to use

Cons: none

Perfect!!

Written By qsalcd29, Texas on Friday, August 16, 2013

Crutchfield Customer Review (What's this?)

Fit perfect to my factory adapter.

Pros: Crutchfield goes above and beyound when it comes to sending only the best to make install a snap. literally. Great Job.

A Simple Review

Written By Stan, TX on Saturday, August 03, 2013

Crutchfield Customer Review (What's this?)

Good morning everyone,

After a fresh cup of coffee I decided to write a simple review about this product. This past Friday I put these adapters on a pair of Pioneer TS-A878 and they worked perfectly. Also the Pioneer TS-A878 fit without any problems in the dash speaker opening.

Pros: Simple, effective, and it works.

Cons: None- they work perfectly without fail.

Makes install much easier

Written By C. Smith, OKC on Friday, August 02, 2013

Crutchfield Customer Review (What's this?)

Must have for a speaker install.

Dodge 3500 Mega cab

Written By Ty, Bothell, WA on Tuesday, July 30, 2013

Crutchfield Customer Review (What's this?)

Worked great on all 6 speakers I used them on!

Like a glove

Written By Jesse, Massachusetts on Tuesday, July 16, 2013

Crutchfield Customer Review (What's this?)

Fit like a glove, made the install extremely easy; no soldering or splicing necessary. Like many say they are kind of long, but I'm sure there are people who are glad they are depending on their install.

Pros: Works perfect

Cons: None

Metra 71-039C Speaker Wiring Adapters

Written By idc, ny on Saturday, July 13, 2013

Crutchfield Customer Review (What's this?)

snaps right in. easy install. perfect fit.

OEM Connector Adapters

Written By RR, San Antonio, Tx. on Saturday, June 29, 2013

Crutchfield Customer Review (What's this?)

These little adapters make the installation of aftermarket speakers a breeze.

Pros: Free with speakers

Cons: None

Makes Install Easy!!!

Written By Jim K, Colorado Springs, CO on Wednesday, June 26, 2013

Crutchfield Customer Review (What's this?)

Crutchfield provided these with speakers I ordered to replace dash speakers in my Dodge Ram. Plug onto speaker, Plug into factory harness. Done........

Pros: Ease of use.

Cons: None

Simplicity at its finest!

Written By JW, Charlottesville, VA on Tuesday, June 18, 2013

this made the installation of my new Polk DX35i speaker into the dash of a 2104 Jeep Grand Cherokee extremely easy. This is a great product!

Pros: Ease of use

Cons: None

Worked in 2013 Ram 1500

Written By Danny, Baltimore, MD on Saturday, June 08, 2013

Crutchfield Customer Review (What's this?)

These will work in both a 2012 Challenger and 2013 Ram 1500. I traded my challenger in for the 1500 and swapped my speakers using the same brackets.

Pros: Works as advertised.

Cons: None

They just work

Written By Dartman, Ventura, CA on Friday, May 31, 2013

Crutchfield Customer Review (What's this?)

These were marked "Mazda" harnesses but they worked flawlessly in my 2013 Dodge Dart dash speakers. It makes the install so much easier as a plug and play, one of many reasons to go with Crutchfield.

Pros: Plug and play

Cons: None

Metra 71-039C Speaker Wiring Adapters

Written By Chris, Danville on Friday, May 24, 2013

Crutchfield Customer Review (What's this?)

Great plug and play

cables makes the job easy

Written By arod, pennsauken, nj on Wednesday, May 22, 2013

Crutchfield Customer Review (What's this?)

these cables work great for my 2012 dodge ram 1500. It was as simple as just plug it in, and go. these cables made the job of replacing my 3 1\2 speakers on my dash simple and clean. it took 15 mins to replace both of them.

Pros: price, adapter

Cons: this field.

Mr

Written By Jerry, Grapevine, TX on Saturday, May 04, 2013

Crutchfield Customer Review (What's this?)

Great tool

Pros: Easy to put together

good adapter

Written By Mikes r, Chicago , IL on Thursday, April 25, 2013

Crutchfield Customer Review (What's this?)

Made install a breeze.

Pros: Easy

Cons: none

Fit like a factory glove

Written By occy30, St. Louis, MO on Monday, April 15, 2013

Crutchfield Customer Review (What's this?)

Couldn't of been easier. Plug 'em in and forget it.

Pros: Perfect fit

Cons: no cons

Excellent Product

Written By MrS, Baytown, Tx on Saturday, March 09, 2013

Crutchfield Customer Review (What's this?)

Bought the product was a bit skeptical about it, got it sooner than i was told thanks to crutchfield....it took me about 5 mins to install aftermarket speakers, the clip fit right in place without even having to force it. Oh in-case i can be of any help to anyone i have a 2011 Dodge Charger.

Pros: It work as i was told. Good price for it the product.

Dash speaker wire harness adapter for 2012 Ram Truck

Written By TL, OK on Monday, March 04, 2013

Crutchfield Customer Review (What's this?)

Perfect fit. Made it Easy! And the extra length added (6") was helpful when working in the tight windshield corner on the dash.

Pros: Perfect fit and Easy!

Cons: none

Perfect Fit

Written By Colin, Phoenix, AZ on Thursday, February 14, 2013

Crutchfield Customer Review (What's this?)

These were a perfect fit for the dash speaker harness in my 2006 Jeep Grand Cherokee. Totally plug and play both at the vehicle harness and the new speakers. Both adapters were labeled as "Left Front," which gave me a chuckle but had no effect on the installation or quality. Both the plug and the spade terminals were solidly connected to the wiring and should last for years to come.

The only improvement I'd make is to offer a version of these with spade connectors pre-installed on the positive lead. After popping in my new speakers, I definitely want to add bass blockers, and it would be a dream if I could go plug and play for those too.

Pros: Perfect fit, quality assembly, good wire gauge

Metra 71-039C Speaker Wiring Adapters

Written By Anonymous, ILLINOIS on Sunday, December 16, 2012

Crutchfield Customer Review (What's this?)

I USED THESE FOR THE FRONT DASH SPEAKERS OF A CHRYSLER 2012 MINIVAN. GREAT WHEN YOUR CHANGING TO AFTERMARKET SPEAKERS.

Pros: PERFECT AND MAKES IT SO EASY. DON'T SEE WHY YOU WOULD SOLDER OVER THE EASE OF USING THESE. THEY HELP GIVE LENGTH TO THE WIRES ALSO TO MAKE WORKING ON THEM EASIER.

Cons: NONE

Easy to install

Written By Fernando, port arthur TX on Sunday, November 11, 2012

Crutchfield Customer Review (What's this?)

very easy to install.

Metra 71-039C Speaker Wiring Adapters

Written By Brad, Rockford, IL on Wednesday, May 09, 2012

Fit Perfectly on my 2011 Ram (Non Alpine) Crew Cab 1500 dash speakers, Also bought JL Audio 3.5 inch C2-350x speakers which fit Perfectly. Brought out the Mids and Highs My stock speakers could not do. The total install time was about 10 minutes and I was being very careful not to scratch anything.

Pros: Plugs work on both ends to the Factory Harness and the new Speaker terminals. No wiring alterations.

Cons: None

Great little adapter

Written By Anonymous, Fresno, CA on Friday, February 03, 2012

Crutchfield Customer Review (What's this?)

Made installing my new Boston 3.5" a breeze in my 2011 Jeep Patriot. Speaker dropped right in, wire harness match factory plug and speaker terminals. Perfect.

Pros: Connects easily, no need to cut factory wires.

Cons: None

custom fit

Written By TimT, Virginia Beach,VA on Sunday, July 31, 2011

Crutchfield Customer Review (What's this?)

I have a pt cruiser 2005 with some connections for the 2006 model and this connector custom fits the bill. Great job Joe a fantastic rep at crutchfield!!

Metra 71-039C Speaker Wiring Adapters

Written By ErikH, Chattanooga, TN on Saturday, June 11, 2011

Crutchfield Customer Review (What's this?)

This worked perfectly on my 2006 Chrysler PT Cruiser with the non-Boston Acoustics radio.

Metra 71-039C Speaker Wiring Adapters

Written By Marvin, Madison, AL on Saturday, April 02, 2011

Crutchfield Customer Review (What's this?)

I have an 02 Jag X Type. These harnesses came free with a pair of speakers I
ordered. Fit perfectly, no cutting of wires which was a nice surprise. Installation
was a cinch.

Metra 71-039C Speaker Wiring Adapters

Written By Michael, Glendale, Az on Saturday, April 25, 2009

Installed these with some Boston S35 3.5" speakers in the dash of my 2008 Grand Cherokee. Worked great and installed with no problems. Not sure what others are saying about them not fitting, they worked just fine for me with no modifications.

Wrong Harness for Jeep Grand Cherokee

Written By Bill, Arvada, CO on Monday, January 26, 2009

I had to modify the connectors for this harness to get them to fit on our 07 Jeep Grand Cherokee. Not a lot of work, but not what I expected from the typical Crutchfield installation kit.

Does NOT fit

Written By Marc, Massachusetts on Monday, December 29, 2008

Crutchfield Customer Review (What's this?)

Crutchfield claims that this harness fits Jeep/Chrysler/Dodge vehicles for small (3.5 inch) dash speakers. They do not fit!!! I should have been more suspicious considering it is listed as a Mazda item.

Didn't fit!

Written By femcadder, New Hampshire on Tuesday, November 04, 2008

These didn't fit for plugging in. We also had to splice the ends of the adapters to the existing wires instead of plug them in. There is a plastic ridge on the base of the female plug which would not allow the flat base of the male plug to slide in.

Does no fit in my application

Written By Hud, Billings, MT on Thursday, October 16, 2008

Crutchfield Customer Review (What's this?)

Apparently these Mazda harnesses are suppose to work as a wiring adapter for the dash mounted 3 1/2" speakers in a 2006 Dodge Ram Sport 1500 4-door. Uuummm...they don't. I had to butt splice the ends of the adapters to the existing wires instead of plug them in. There is a plastic ridge on the base of the female plug which would not allow the flat base of the male plug to slide in.

In my application it gets a worst rating. In whatever application these fit, I am sure they work wonderfully as did the adapters for my door speakers. Plug and play!! Not these sadly.

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