Metra 70-1720T Receiver Wiring Harness

Connect a car stereo in select 1996-98 Honda vehicles with factory keyless entry

Item #: 120701720T

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Metra 70-1720T Receiver Wiring Harness

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

First, attach the color-coded wires on your Crutchfield-supplied harness to the wires from your new stereo. If you're not using a soldering iron, we recommend that you purchase some wire connectors to secure the connections. Check out our handy article on three ways to connect the wiring harness here.

Now, once this harness is connected to your new stereo, you'll be able to plug right into your car's factory radio connector. This harness makes installing your new stereo easier, and allows you to put the factory radio back when you sell your vehicle or return it at the end of the lease. A detailed instruction sheet comes with the harness. Warranty: 60 days.

Please read this important note: This harness may not contain provisions for every wire needed to complete your installation, and it will not accommodate special navigation, video, or factory steering wheel control connections. You will need a special adapter if you want your factory steering wheel audio controls to work with your new stereo.


Note: In order to retain your factory keyless entry functionality, you'll need to keep your factory radio, and relocate it inside your dash behind the lower trim panel. This harness has two plugs - one connects to the factory wiring, and the second plugs into the factory radio to provide power to it. If you remove the factory radio, you will lose your factory keyless entry feature.

  • 12V constant power
  • 12V switched power
  • chassis ground
  • power antenna turn-on
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-

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.

Metra 70-1720T Receiver Wiring Harness Reviews

Average Customer Review:

28 reviews
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Metra 70-1720T Receiver Wiring Harness

Written By Ron, Missouri on Sunday, September 13, 2015

Crutchfield Customer Review (What's this?)

Great product that makes installation simple

Pros: easy install and easy for a first time installer to get it right.

Cons: none

Works like a charm and Thanks for the help

Written By KevinK, Worcester MA on Tuesday, September 08, 2015

Crutchfield Customer Review (What's this?)

I installed a radio head in my son's 1998 Civic and when I was ordering parts initially, I guess I got ahead of myself and ordered the wrong harness. Got elbow deep in it on a Sunday and when I figured out I had the wrong harness, I called customer support - I talked to Jason(?) and he couldn't have been more helpful. He got the correct harness to me at no cost and even sent it priority mail so I could get the job done quickly. Thanks to everyone at Crutchfield - you are the best!

Pros: Fit perfectly and was easy to install

Cons: none

Metra 70-1720T Receiver Wiring Harness

Written By Anonymous, Colorado on Tuesday, May 05, 2015

Crutchfield Customer Review (What's this?)

everything I needed

worth every penny

Written By Richard, Tennessee on Tuesday, March 31, 2015

Crutchfield Customer Review (What's this?)

the harness hooked right up (color to color),then plugged right into the factory was so easy

Metra 70-1720T Receiver Wiring Harness

Written By Harold, California on Monday, December 29, 2014

Crutchfield Customer Review (What's this?)

the easiest way to replace your stock Head Unit with a plug and play harness. awesome product and great instructions.

Pros: no need to cut your original electrical

Cons: none

Easy to use

Written By Justin, Westminster, MD on Monday, August 25, 2014

Crutchfield Customer Review (What's this?)

Makes the job easy.

Metra 70-1720T Receiver Wiring Harness

Written By Anonymous, California on Friday, June 20, 2014

Crutchfield Customer Review (What's this?)

Works great. A must when trying to keep the factory alarm/keyless

Pros: Easy to use

Cons: None

So easy to install

Written By Roballbrzl, Virginia Beach, VA on Tuesday, April 01, 2014

Crutchfield Customer Review (What's this?)

If you can follow instructions this is it .... Save your money and do it yourself and learn more about your car

Pros: Very easy step by step instructions

Cons: None

Critical gear for professional looking install

Written By DavidG, Franklinton, NC on Monday, March 03, 2014

Crutchfield Customer Review (What's this?)

This is essential gear for an install where the factory radio has to remain wired for the key fob to work. I'd be lost without this wiring harness and the clear instructions provided by Crutchfield.

Pros: Worked perfectly!

Cons: None.

Fast and Easy

Written By mr.W, California on Friday, February 21, 2014

Crutchfield Customer Review (What's this?)

This harness is really easy to use. It makes things simple and fast.


Written By vic.sxr, Louisville, KY on Monday, February 17, 2014

Crutchfield Customer Review (What's this?)

works as suppose to

Pros: ease of use

Cons: none

Great instructions and fit

Written By Michael W, Layton, UT on Saturday, January 18, 2014

Crutchfield Customer Review (What's this?)

I actually modified my harness (removing the second connector) because I didn't want to keep my keyless entry, as it hadn't been working reliably. The instructions are great, with one warning--when it tells you to splice the green/red and green/black wires, look for the light green wires--not the brighter green ones. Once you figure this out, it's pretty easy and straightforward.

If you still aren't sure which wires to splice, a quick YouTube search should point you in the right direction.

Pros: Allows you to keep keyless entry, connects easily

Cons: Instructions refer to green wires, not light green. Wire splice must be done in order to preserve overhead dome light functionality.

Perfect Match

Written By Mike M., Delray Beach, FL on Saturday, January 04, 2014

Crutchfield Customer Review (What's this?)

The harness matched perfectly, the Master Sheet was very informative. I still had 1 question and Technical Support on the phone was EXCELLENT ...Can't say enough good things about Crutchfield...

Beyond easy to use

Written By Will, Bridgeport, CT on Friday, August 09, 2013

Crutchfield Customer Review (What's this?)

Was recommended for me to get in order to keep stock features and they were right. Very easy to use.

Pros: Ease of use and being able to keep stock car features.

Cons: None.

Very nice

Written By Vince, Chicago IL. on Wednesday, April 24, 2013

Crutchfield Customer Review (What's this?)

Installing the reciever with this wiring harness was a breeze

Pros: Very easy install

Cons: None

1997 civic deck swap

Written By Bobby, Owasso OK on Sunday, January 06, 2013

Crutchfield Customer Review (What's this?)

Easy to wire up and shipped to my door quickly.

Pros: Match color to color and great price.

Cons: None


Written By Anonymous, Ohio on Tuesday, July 17, 2012

Crutchfield Customer Review (What's this?)

Literally the best online purchase of my life. Item shipped fast. I installed in under 30 minutes and it allowed me to tuck the stock radio behind the dash, and use my aftermarket one. It came with instructions for the whole install and works like a charm!!!! So happy! thank you Crutchfield excellent service!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Made life so much easier

Written By Oscar, Chino Hills, CA on Sunday, February 26, 2012

Crutchfield Customer Review (What's this?)

Made my install so much easier for my 1998 Honda Civic EX .

Pros: Works perfect.

Cons: NONE

Easy wiring

Written By t, Northern VA on Monday, July 11, 2011

Crutchfield Customer Review (What's this?)

This harness made installing the new stereo very easy. All you do is hook up the new stereo to the harness and plug it in! Worked like a charm. Thanks Crutchfield!

Did not need to keep the old deck

Written By Martymann, Fresno, CA on Sunday, November 28, 2010

Crutchfield Customer Review (What's this?)

I did not need to keep my old Honda stereo behind the gloove box as I was told for my
auto unlock to work on my 98 Civic. Overall it was esy to install. I ecommand that you
remove the old Civic deck and see if you locks still work, if so then you don't need to
keep the old deck behind the dash.

Works great

Written By mslongjr, Austin, TX on Monday, August 23, 2010

Crutchfield Customer Review (What's this?)

This harness did a fine job of connecting my new Sony to the old factory radio (needed to
preserve keyless entry functions) and to the factory wiring in the dash. Note that you'll still
need a soldering iron or a set of wire connectors to connect the harness to the wiring from
your aftermarket radio, however.

Metra 70-1720T Receiver Wiring Harness

Written By Anonymous, Naperville, IL on Monday, January 11, 2010

Crutchfield Customer Review (What's this?)

Unfortunately the instructions assumed the manufacturer's original radio was still in operation and had not already been replaced by a previous owner of the auto with an Alpine unit. This is likely my error. Therefore instead of rewiring the system using the Crutchfield provided harness; instead cut the existing radio's connection to the harness already in place and soldered the Dual radio's connecter to the interface plug wiring. All is working flawlessly.

Metra 70-1720T Receiver Wiring Harness

Written By Todd, Waxhaw, NC on Friday, February 20, 2009

Crutchfield Customer Review (What's this?)

This wiring harness was extremely helpful and made the installation of my new reciever a snap. The only advice that would have been helpful and saved me some trouble would have been to have known that the radio that is being replaced also has the seperate cassette player, the cassette player needs to be removed also to make room for the factory radio to be stored if you have keyless entry.

Life made easy

Written By Eric, New Braunfels, Texas on Sunday, January 25, 2009

Crutchfield Customer Review (What's this?)

This harness was a tremendous aid in installing our new head unit. We soldered all of the connections with shrink tubing for protection but it could just as easily been done with crimped connectors. Only suggestion would be to include the connectors...

Honda Wiring Harness

Written By Ritchie, 94538 on Friday, September 19, 2008

Crutchfield Customer Review (What's this?)

Excellent wiring harness for my car and it's perfect fit no cutting wires and it's easy installation with my new head unit..

makes instalation easy

Written By Mike, columbia, pa on Monday, September 15, 2008

Crutchfield Customer Review (What's this?)

if you want an easy installation, this is for you

Metra 70-1720T Receiver Wiring Harness

Written By ALAADDIN, daytona beach florida on Saturday, February 16, 2008

thank you it was a prefect fit for my car

Perfect fit, clean solution, some assembly required

Written By Dennis, Richmond, VA on Friday, October 21, 2005

I bought this for and fitted this into my wife's 1998 Honda Civic EX. The harness is just the right length to fit the old stereo down in front of the shifter (and keep the keyless entry) and the fit of the connectors is superb. The instructions were very clear and make the mate to the stereo harness very easy. I would recommend soldering the wires of this harness with the wires from your radio harness for the cleanest look; you could also use inline crimped wire connectors to keep things fairly neat looking.

When you move the factory radio, make sure you remove the faceplate to keep it from turning on and work on it to get it as far down into the hole behind the cigarette lighter as possible. I found that wrapping the old stereo as described in the included instructions was not an option as it makes fitting the stereo in the hole too difficult. I made a cardboard face to cover the hole left when the faceplate was taken off and that worked fine.

Hands-on research

What's in the box?

Download owner's manual

  • Receiver wiring harness (with 2 plugs)

Product Research


Crutchfield Wiring Harness: Crutchfield wiring harnesses prevent you from having to cut your vehicle's factory radio plug when replacing your factory radio with an aftermarket head unit. Simply solder or crimp the Crutchfield wiring harness to your aftermarket head unit's harness (solder & crimps not included), plug the aftermarket head unit's plug into the rear chassis of the aftermarket head unit, and plug the Crutchfield wiring harness into your vehicle's factory radio plug.

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

Wiring Notes: If the Crutchfield wiring harness is not equipped with a ground wire, you will need to ground the aftermarket head unit's ground wire to the metal chassis of your vehicle. Some vehicle's may require you to bypass the vehicle's factory amplifier (in another location from factory radio) or hardwire certain connections. If your vehicle is equipped with factory steering wheel controls, an additional adapter is required and sold separately.

Special Harness Function: This harness is required for select Honda vehicles that have factory keyless entry built into the factory radio. When replacing the factory radio with an aftermarket head unit, you will need to relocate the factory radio behind the lower dash trim panel in order to retain the keyless entry function. This harness includes a plug that provides constant and switched power and ground to power the factory radio.

Wire Code Chart:

Wire Color Function
Plug 1 (connects to vehicle's receiver harness in the dash)
Red +12 Volt Accessory These wires provide a jumper from Plug 1 to Plug 2
Yellow +12 Volt Constant
Black Chassis Ground
Blue Power Antenna
Empty (none)
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -
Plug 2 (connects to factory radio)
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Chassis Ground

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 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.

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