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Metra 70-1784 Receiver Wiring Harness Connect a new car stereo in select 1992-18 vehicles

Item # 120701784

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

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

California customers:
Please click here for your Proposition 65 warning.

14 questions - 12 answers

Item # 120701784

In stock
$12.99

About the Metra 70-1784 Receiver Wiring Harness

Metra 70-1784 Receiver Wiring Harness

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

Metra 70-1784 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 saves installation time since you won't have to cut factory wires individually, and this also enables you to re-install the factory radio if needed. 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.

Connections:

  • 12V constant power
  • 12V switched power
  • chassis ground
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-
READ LESS

What's in the box:

  • Wiring harness
  • Blue wire lead
  • Blue/white wire lead
MFR #70-1784

Customer reviews for Metra 70-1784 Receiver Wiring Harness

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4.5 out of 5 stars
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More details on the Metra 70-1784 Receiver Wiring Harness

Stacey B.

Product Research

Features

Metra Wiring Harness: This Metra wiring harness prevents 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 Metra 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 Metra 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 Metra 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 & sold separately.

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Customer Q&A

14 questions already asked

Q
My 04 saab 9-3 has a wiring harness that has i believe fiber optics and with out that connector the car don't start ?
gibbs  Jan 23, 2022
1 answer
A
For additional 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.
kenneth  Jan 24, 2022 (Staff)
Q
Can extra crimp pin connections be purchased to add or replace damaged or missing pins?
matt  Dec 30, 2021
1 answer
A
No, unfortunately we don't carry extra pin connectors. We only carry the complete wiring harness.
allison  Jan 06, 2022 (Staff)
Q
Anyway to hook up the center dash speaker with this harness? Aftermarket headunit only has front left front right but trying to add a 3rd speaker up front? Any wiring diagrams suggestions?
james  Dec 02, 2021
2 answers
A
Positive to one channel negativr to the other splits the ohm load up even
paul  Dec 03, 2021
A
Only way is to attach it to the front speakers, there is no center speaker wire,
omar  Dec 03, 2021
Q
how does this impact the data port?
terry  May 17, 2021
1 answer
A
These are just electric wires for power, lights and speakers. There is no data been going thru this harness
esteban  Mar 23, 2022
Q
What do I do if my car harness is only using one side, and the OEM harness uses both?
curious  Mar 24, 2021
1 answer
A
What audio option does your car have? Do you have the factory Bose amplified system?
paul  Mar 24, 2021
Q
Where do the amp turn on wires fit into my harness?
carl  Jun 02, 2020
1 answer
A
I used the existing ignition on/off wire.
ching pin,  Jun 09, 2020
Q
Do i need to get a amp bypass harness or just unplug the factory amp on a 1995 mercedes Benz E320? I plan on using a sub amp for two tens in the trunk later on.
mike  Mar 20, 2018
1 answer
A
For details on 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 what you will need for an installation.
kristina  Mar 28, 2018 (Staff)
Q
with this wire kit will it have all 7 speakers work with my aftermarket radio?
doran  May 09, 2016
1 answer
A
This will depend largely on your vehicle. For details on 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 what you will need for an installation.
kenneth  May 10, 2016 (Staff)
Q
I am also installing aftermarket 6.5in speakers to the stock amp. Its a monsoon system. Will this also wire up the amp? And how about the anti theft too?
justin  Oct 27, 2014
1 answer
A
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.
kristina  Oct 28, 2014 (Staff)
Q
Hello I recently got a alpine aftermarket radio installed from a shop and now my car battery dies overnight I'm thinking they didn't use the correct harness for my 2001 vw jetta 1.8T sedan I've been reading online that if the correct harness isnt used the amp stays on thus killing the battery my question is will this be the harness I need or do I need a different one with a amp integration plug?
charlie p.  Mar 23, 2014
2 answers
A
I am also installing aftermarket 6.5in speakers to the stock amp. Its a monsoon system. Will this also wire up the amp? And how about the anti theft too?
justin  Oct 27, 2014
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
kristina  Mar 24, 2014 (Staff)
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