Metra 71-043 Speaker Wiring Adapters

Work with select 1995-up General Motors vehicles — connect new speakers to to factory wiring plugs

Item #: 12071043

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Metra 71-043 adapters

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

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.

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What's in the box?

Download owner's manual

  • 2 Speaker harnesses
  • Instructions

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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.

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Metra 71-043 Speaker Wiring Adapters Reviews

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Metra 71-043 Speaker Wiring Adapters

Written By Anonymous, Elyria, OH on Wednesday, December 17, 2014

Crutchfield Customer Review (What's this?)

Great product that easily connects new speakers to your factory wiring in the car. Keeps polarities correct too, no double checking speeds installation.

Car speaker wiring

Written By Sparry32, Arvada, Colorado on Sunday, October 05, 2014

Crutchfield Customer Review (What's this?)

Very helpful! saved a lot of time!

Pros: Saves time and makes wiring easy

Cons: None

Metra 71-043 Speaker Wiring Adapters

Written By BurntLiquid, Michigan on Wednesday, July 23, 2014

Crutchfield Customer Review (What's this?)

Made installing speakers in my 04 grand prix very easy and professional. I had to clip and crimp new terminals on the wire harness because the ones on there were too small.

Pros: Easy to install, Clean install.

Perfect Fit

Written By Jonnywrench, El Paso, IL on Tuesday, January 21, 2014

Crutchfield Customer Review (What's this?)

Perfect fit for existing wiring in for my 95 blazer. Easy to install, not cutting and splicing

Pros: Quality product, great fit, no cutting and splicing.

Cons: None

Easy fit

Written By Jamie, Pulaski, TN on Tuesday, July 09, 2013

Crutchfield Customer Review (What's this?)

Made installation so simple.

Pros: Ease of transition to aftermarket

Cons: NONE!

Crutchfield was on top of it.

Written By djskyblade, Southern IL. on Sunday, August 19, 2012

Crutchfield Customer Review (What's this?)

The rear door speaker wiring harnesses were different in my '98 Blazer LS than in the front and Crutchfield was on top of it. Just make sure that you add front and rear door speakers separately to your cart instead of updating your quantity.

Pros: Free!

Cons: N/A

Metra 71-043 Speaker Wiring Adapters

Written By Anonymous, Columbus,OH on Wednesday, February 08, 2012

Crutchfield Customer Review (What's this?)

Wires had wrong plug on them, needed to plug the other way.

Perfect fit

Written By Anonymous, Louisville, Ky on Monday, January 30, 2012

Crutchfield Customer Review (What's this?)

5 stars

speaker harness kits

Written By t v, wichita, ks on Friday, January 27, 2012

Crutchfield Customer Review (What's this?)

harness kit was for the rear speakers only, had to go buy different ones for the front speakers

Pros: free and easy

Cons: a pair for the front speakers would have been nice

Perfect fit for 4 door 99 Blazer

Written By Tony, Ashburn, VA on Wednesday, September 30, 2009

These snapped perfectly into the OEM wire harness on the rear doors of my Blazer. A few things to note during your install however: if you are not soldering the ends, the speaker clip on the positive lead (the bigger of the two) will not fit through the hole between the OEM speaker mount and the door. You will have to modify it. I clipped off the tabs that were used to hold the old wiring in place and was able to squeeze it through fairly easily. Also, due to the length of the speaker harness, I had to rotate the speaker sideways in order to give the wires some slack. This is not really an issue, as the speaker still performs just fine and once the door panel is re-installed makes it very hard to notice. Lastly, (and more a problem for polk than the harness), there was a transistor on my polk 651dbs speakers that was placed very close to the positive speaker post. Because of this the plastic cover on the positive speaker clip gouged into the coating surrounding the transistor. So beware if you are installing those speakers. I gently rolled the transistor to the side when connecting the speaker clip and then let it press back on the clip afterward.

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