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Metra 70-1777 Receiver Wiring Harness

Connect a new car stereo in select 2002-04 Ford Focus vehicles

Item # 120701777

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

Find what Fits your car

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

California customers:
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Item # 120701777

In stock

About the Metra 70-1777 Receiver Wiring Harness

Metra 70-1777

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

Metra 70-1777

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. 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 (see Details for a list of connections) if you want your factory steering wheel audio controls to work with your new stereo.


What's in the box:

  • Power/ground harness
  • Speaker wire harness
  • Accessory harness
MFR #70-1777

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More details on the Metra 70-1777 Receiver Wiring Harness

Stacey B.

Product Research


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.

Vehicle Compatibility: This harness is compatible with select 1999-2004 Ford Focus and Mercury Cougar vehicles.

Wire Code Chart:

Harness Type Wire Color Function
Power Harness Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Chassis Ground
Orange Illumination
Speaker Harness 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 -
Accessory Harness Blue/pink Vehicle Speed Sense
Black SWC Ground
White/Green SWC Signal
White RCA Mono-Sub
Blue/white Sub Amp Turn-On

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Customer Q&A

Crutchfield asked: Why did you buy this?
A forum pointed me in the direction of this custom harness for my 02 SVT focus. I wanted something simple and easy. Apparently this is it. [ brice  Jun 27, 2019 ]
Thanks to Jeffrey who commented about the svt focus [ Gary  Feb 16, 2019 ]
Easy conversion from factory harness to aftermarket. [ matthew  Jan 26, 2019 ]
It will make my life so much easier and if I need help Crutchfield will help me with a simple phone call. Cant beat the professionalism and knowledge [ John  Sep 05, 2018 ]
I picked this harness because it is the only on that works specifically with a Focus SVT, which is not listed in your car database (and has not been, ever). The salesman didn't know this harness is required to keep the factory sub that comes with the Ford Audiophile system in the Focus SVT. [ Jeffrey  Jun 19, 2018 ]
I needed to find the correct radio harness for my vehicle. After checking all of my local stores, such as Pep Boys, Advance Auto Parts, and Auto Zone, no one carried the correct harness I needed so I checked Crutchfield and sure enough they had it available. [ Stephanie  Apr 22, 2018 ]
hooking up stereo and they were free [ connie  Jan 10, 2016 ]

2 questions already asked

Will this work for the Audiophile 6 changer factory stereo with factory subwoofer in my 2003 Ford Focus zx3?
[ Mark  May 21, 2018 ]
1 answer
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Krissy  May 28, 2018 ]  Staff
Reviews says there is no wiring diagram for the thir connector (accesory harness), it is included or not? Wold you be able to send me that information before I buy the item unnecessarily? thanks. Best Regards Kenier Martinez
[ Kenier  Feb 18, 2018 ]
1 answer
I would suggest reaching out to an Advisor directly by phone (1-800-324-9695) or online chat. They should be able to help answer your question in greater detail. Thanks!
[ Larry  Feb 27, 2018 ]  Staff

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