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Metra 70-8902 Receiver Wiring Harness

Connect a new car stereo in select 2012-up Subaru vehicles with Harman Kardon system

Item # 120708902

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

Find what Fits your vehicle

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

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Item # 120708902

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About the Metra 70-8902 Receiver Wiring Harness

Metra 70-8902 Receiver Wiring Harness

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

Metra 70-8902 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.


What's in the box:

  • 6.5" Receiver power/ground/front speaker harness
  • 12" Receiver rear speaker harness
  • 12" Aux/SWC harness
MFR #70-8902

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Crutchfield response

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More details on the Metra 70-8902 Receiver Wiring Harness

Stacey B.

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 & sold separately.

Retained Features: This harness retains the following factory features. 

  • Harman Kardon Amp: The harness lets you retain your vehicle's factory Harman Kardon amplifier; your aftermarket head unit must be equipped with at least 4 channel preamp outputs.
  • Aux Input: To retain the vehicle's factory Aux input, your aftermarket head unit must have a rear-panel Aux input (male mini to female stereo RCA adapter may be required, sold separately).
  • Reverse Output: A reverse output wire is included in the harness to make installing an aftermarket back-up camera to your new aftermarket stereo.
  • Optional Steering Wheel Control Interface: The included wiring harness features a right-angle 3.5mm connector that lets you keep your vehicle's OEM steering wheel controls via the optional Axxess Steering Wheel Control Interface (120ASWC1, sold separately).

Wire Code Chart:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Blue/white Amp  Turn-On
Orange/white Illumination
Green/violet Reverse Gear
White RCA Front Left Speaker
Gray RCA Front Right Speaker
Green RCA Rear Left Speaker
Purple RCA Rear Right Speaker
White RCA Left Aux Input
Red RCA Right Aux Input
3.5mm Jack SWC Connector for 120ASWC1

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific type of vehicle.

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Customer Q&A

2 questions already asked

Can I remove the gray, white, green, and purple RCA jacks and splice them to the respective wires on the receiver if my receiver doesn't have those rca ports? My receiver has +/- ports for front and rear speakers that align with the colors of the RCA plugs but it doesn't have ports for those plugs to go into.
[ Mike  Jul 25, 2022 ]
1 answer
Greetings Mike, and thank you for your question. The RCA jacks are lower voltage, and the Speaker level out of your stereo is a higher voltage. A higher voltage out to your factory amplifier may damage the amplifier, or at best you would have a lot of distortion. You either have the wrong harness, or would need a stereo with front and rear RCA outputs. Give us a call at 800-324-9695 to evaluate your vehicle, and the stereo going into it.
[ Thomas J.  Jul 25, 2022 ]  Staff
Where are the subwoofer connections on this wire harness? 2012 Subaru Outback with the Harman Kardon system has a factory amp and subwoofer. The JVC KW-M150BT unit I purchased from Crutchfield has an RCA type connector for the subwoofer but this harness has no connections to tie it into the cars wiring.
[ Warren  Jan 14, 2020 ]
3 answers
A subwoofer connection is not needed. The factory amp splits the signal to the factory subwoofer.
[ John  Feb 06, 2020 ]
There will be no need for subwoofer connections because the Harmon Kardon system splits the signals as needed for the subwoofer.
[ Michael  Feb 06, 2020 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. 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.
[ Krissy  Feb 06, 2020 ]  Staff

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