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Metra 71-021C Speaker Wiring Harnesses

For select 1969-87 vehicles

Item # 12071021

These harnesses will allow you to plug your new speakers into the factory connectors present in the speaker...

Find what Fits your car

These harnesses will allow you to plug your new speakers into the factory connectors present in the speaker...

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Item # 12071021

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About the Metra 71-021C Speaker Wiring Harnesses

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

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

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

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What's in the box:

MFR #71-021C

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Metra 71-021C Speaker Wiring Harnesses reviews

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6 reviews

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Metra 71-021C Speaker Wiring Harnesses

Crutchfield customer from Webster, NY on 4/1/2019

1979 Ford F Series

Verified customer (What's this?)
Verified employee purchase (What's this?)

What can I say? They work like intended and plug right into the factory harness. Saves a little time having to cut and splice and also leaves things original.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Perfect fit

Crutchfield customer from Kent, WA on 3/20/2018

1974 Ford F Series

Verified customer (What's this?)
Verified employee purchase (What's this?)

These speaker harnesses were a perfect fit for the factory 67-79 door harnesses.

Pros: Fit like OEM

Cons: None.

Crutchfield response on

0 of 0 found this helpful

Quality

Doug from Winthrop, WA on 7/11/2016

1976 Ford F Series

Verified customer (What's this?)
Verified employee purchase (What's this?)

Perfect fit

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Ford Mustang Speaker Adapters

Happy Classic Mustang Owner from Geneva, Oh on 11/18/2013

Verified customer (What's this?)
Verified employee purchase (What's this?)

Perfect fit on my classic car, even though these do not show up in vehicle listing! Definitely worth having them sent out! These made the Retro-Sound 4x8's I bought here at Crutchfield, wire directly into the factory door wiring!

Pros: PERFECT!

Cons: NONE!

Crutchfield response on

0 of 0 found this helpful

speaker harness supplied

allen h from valle vista, ca on 4/24/2012

1980 Ford F Series

Verified customer (What's this?)
Verified employee purchase (What's this?)

didnt need these

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Not correct

JJ from Montana on 12/12/2011

1979 Ford Bronco

Verified customer (What's this?)
Verified employee purchase (What's this?)

I was surprised these were offered for such an old vehicle, but unfortunately they did not work. I was able to splice my speakers into the original harness. They were free with the speaker purchase so no big deal.

Pros: I really liked the idea of being able to plug and play my speakers.

Cons: These do not plug into the factory door harness plug on a 79 Ford Truck/Bronco. The factory plugs are similar but larger.

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Cons:

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More details on the Metra 71-021C Speaker Wiring Harnesses

Pat M.

Product Research

Features

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

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
They came free with the speaker purchase, but they do make the install plug-and-play. [ Keith  Feb 08, 2019 ]
A
Memphis is always been a good quality from experience. [ Jason  Sep 19, 2018 ]
A
They came free with the speakers [ Robert  Jun 08, 2018 ]
A
To hook up to the factory harness that I purchased from Dennis Carpentar [ Marc  Feb 01, 2018 ]
A
Converted factory wires in door to aftermarket connectors. Quick and easy hook up. [ Daniel  Nov 14, 2016 ]
A
It was free [ Robert  Oct 20, 2016 ]
A
Always use new wiring whenever possible. [ JOE  Aug 28, 2016 ]
A
made install a snap!! [ wren  Jan 26, 2016 ]
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