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Metra 70-9003 Receiver Wiring Harness

Connect a new car stereo in select 2001-12 BMW, Mercedes, Mini, Porsche, Pontiac, and Volkswagen vehicles

Item # 120709003

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

Read more from Crutchfield writer, Kemp H.

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In Stock
$14.99

About the Metra 70-9003 Receiver Wiring Harness

Metra 70-9003 Receiver Wiring Harness

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system. It includes a wire bundle with a connector and a separate red wire for the accessory (12-volt switched) connection. This individual 42" red wire must be run from the receiver to the vehicle's fuse panel to provide 12-volt switched power.

Metra 70-9003 Receiver Wiring Harness

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system. It includes a wire bundle with a connector and a separate red wire for the accessory (12-volt switched) connection. This individual 42" red wire must be run from the receiver to the vehicle's fuse panel to provide 12-volt switched power.

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.

Connections:

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

What's in the box:

  • Receiver wiring adapter harness
  • 42" Red wire (a Molex plug insertion pin on one end and a female quick slide with fuse tap on the other)

Customer reviews

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Metra 70-9003 Receiver Wiring Harness Reviews

Average Customer Review(s):

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Crutchfield response

More details on the Metra 70-9003 Receiver Wiring Harness

Product Research

Features

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.

Wire Code Chart:

Wire Color Function
Red *
(Long individual wire)
+12 Volt Accessory
(Not in harness)
Yellow +12 Volt Constant
Black Chassis Ground
Blue Power Antenna
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 -

*The individual 42" red wire included with the harness must be run from the receiver to the fuse panel to provide 12 volt switched power.

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

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Fits direct [ PETER  Mar 01, 2019 ]
A
Because it fits my car [ DOUG  Feb 28, 2019 ]
A
To facilitate installation. [ LUIS  Jan 20, 2019 ]
A
Required for connection to my vehicle. [ Guillermo  Dec 17, 2018 ]
A
Cause Cosmo said so! [ Tom  Nov 16, 2018 ]
A
To make installation much easier [ Dale  May 07, 2018 ]
A
fits my z4 [ Christopher  Feb 27, 2018 ]
A
Match the colors and plug in for easy installation [ Omar  Jan 20, 2018 ]
A
can't go wrong makes install much easier, easy insructions [ SCOTT  Nov 28, 2017 ]
A
it was recommended so I trust that Crutchfield is making sure I have all the appropriate pieces to do a successful install [ Phil  Jul 18, 2017 ]
A
replacing car stereo in Mini Cooper [ Kurt  Jun 25, 2017 ]
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Easy plug and play for BMW Z4 [ Michael  Jun 23, 2017 ]
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It looks easy to use [ Jacob  Jun 12, 2017 ]
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It says it will work with my car [ Rick  Jun 10, 2017 ]
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good products [ SAMUEL  May 16, 2017 ]
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ease of installation [ Donald  Apr 13, 2017 ]
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easier way to hook up wires [ Henry  Apr 10, 2017 ]
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recommended for my car model [ C  Apr 08, 2017 ]
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It was recommended for the make and model of car I own to support the product I purchased [ H  Mar 24, 2017 ]
A
needed it [ tarus  Mar 21, 2017 ]
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This is an absolute requirement to connect aftermarket receiver to OEM harness. [ Tyrone  Dec 20, 2016 ]
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recommended for easy installation [ Kevin  Dec 17, 2016 ]
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It's necessary to wire the stereo. [ John  Nov 11, 2016 ]
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ease of completion of install [ thomas  Nov 10, 2016 ]
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recommended [ C  Oct 17, 2016 ]
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Easier and cleaner install. [ Mark  Oct 04, 2016 ]
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I like the punch per channels. Am sure it sond great . [ Louis  Jun 29, 2016 ]
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i love the steering wheel controls [ LUKE  Jun 14, 2016 ]
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Because it fits my MINI. [ Philip  May 05, 2016 ]
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It fits my car [ Chiu  May 03, 2016 ]
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Had excellent experience with Crutchfield wiring harness on previous radios for BMW Z3. [ JERRY  May 01, 2016 ]
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Fits [ Scott  Apr 30, 2016 ]
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ease of installation [ Richard  Apr 01, 2016 ]
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Was recommended by Crutchfield to fit my specific vehicle. [ Russell  Mar 17, 2016 ]
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Supplied by Crutchfield [ STEVEN  Jan 20, 2016 ]
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Because it was part of the package that was recommended to go along with the stereo/vehicle combination that I chose. [ Brian  Dec 28, 2015 ]
A
Recommended [ Roderick  Dec 11, 2015 ]
SHOW MORESHOW LESS

3 questions already asked

Q
Trying to connect this to an AXXESS ASWC-1 steering wheel control for my 2005 BMW z4. It says to connect Pink Wire of the ASWC-1 to pin 9. There is no connector in pin 9 position of the metra 70-9003. What am I doing wrong?
[ Shawn  Mar 15, 2017 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the connections 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/.
[ Kenny  Mar 15, 2017 ]  Staff
Q
I have a 2006 bmw X3 and I cant seem to find which fuse to plug the red wire. Also could you test if the radio is working without it?
[ Madhesh  Sep 16, 2014 ]
1 answer
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/.
[ Krissy  Sep 17, 2014 ]  Staff

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