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Metra 40-NI12 Antenna Adapter

Works with select 2007-up Infiniti, Suzuki, and Nissan vehicles — Motorola male to factory OEM antenna female

147 Reviews | 2 questions - 2 answers

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Item # 12040NI12

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This antenna adapter lets you connect a new car stereo to the factory antenna cable in select vehicles. The adapter has an OEM female plug on one end and a Motorola male plug on the other. You'll also need another Nissan adapter if you are connecting an FM modulator or add-on CD changer to your factory radio.

Metra 40-NI12 Antenna Adapter

This antenna adapter lets you connect a new car stereo to the factory antenna cable in select vehicles. The adapter has an OEM female plug on one end and a Motorola male plug on the other. You'll also need another Nissan adapter if you are connecting an FM modulator or add-on CD changer to your factory radio.

Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle. Warranty: 60 days.

Worked well

Anonymous, Oklahoma City, OK

What's in the Box:

  • 12" Nissan antenna adapter cable with a proprietary Nissan factory antenna plug on one end and a standard male motorola plug and bare blue wire on other end

Metra 40-NI12 Antenna Adapter Reviews

Average Customer Review(s):

(147 Reviews)
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Hands-on research

Product Research


Overview: The Metra 40-NI12 vehicle antenna adapter cable allows you to replace your 2007 and up Nissan factory radio with an aftermarket radio that uses a standard motorola antenna input. The adapter cable features a proprietary plug that connects to your Nissan's factory antenna and a standard male motorola plug that connects to your aftermarket radio's antenna socket. The adapter cable also features a blue wire which connects to your aftermarket radio's power-antenna/turn-on lead.

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.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

it was suggested [ oscar  Jun 20, 2017 ]
This was included. [ DAVID  Jun 19, 2017 ]
I assume that it is needed for the installation. It came as part of the gear when I put the receiver in my shopping cart. [ Mckinley  Jun 17, 2017 ]
Because it is free. [ Marco  Jun 16, 2017 ]
I am putting an aftermarket stereo in a friends 2013 Nissan Versa and need this adapter to connect the antenna to the aftermarket stereo antenna-in female connector. [ Joshua  Jun 16, 2017 ]
its required! [ timothy  Jun 05, 2017 ]
need to hook up my radio antenna for 2012 Nissan Versa HB [ Ej3235  Jun 02, 2017 ]
Good reviews [ Scott  May 31, 2017 ]
did not know I did? [ WILLIAM  May 25, 2017 ]
Not sure [ STEVEN  May 14, 2017 ]
Came with the install kit. [ RYAN  May 13, 2017 ]
needed it for install [ Brian  May 11, 2017 ]
Required for my installation. [ Hugh  May 09, 2017 ]
Free with purchase, why not? Not even sure what it's for! [ Luke  May 05, 2017 ]
Needed to insure the radio would pick up local radio stations [ TRAVIS  Apr 23, 2017 ]
I choose this so I didn't have to splice my old factory antenna adapter, this adapter will allow me to connect to my antenna factory plugin. [ Zachary  Apr 13, 2017 ]
Had to have it for the head unit install [ John  Mar 25, 2017 ]
Needed (as far as I know) to adapt the vehicle's antenna connector to the head unit. [ Kelly  Mar 17, 2017 ]
Quick hookup to factory antenna [ Jeff McLean  Mar 14, 2017 ]
required for installation [ David  Mar 03, 2017 ]
a true necessity for this install on a 370Z [ Abel de  Feb 23, 2017 ]
A assume this item is necessary to hook up the antenna. [ Jovannie  Feb 22, 2017 ]
recommended by Ryan [ Gerard  Feb 15, 2017 ]
Included [ Steven J. van  Feb 13, 2017 ]
needed for new pioneer installed in my car [ P  Feb 13, 2017 ]
It's still important to have radio capabilities!!! [ Ian  Feb 06, 2017 ]
It has everything [ Kelissa  Feb 02, 2017 ]
To listen to the radio [ Jeremy  Feb 02, 2017 ]
needed this for the install [ cary  Feb 02, 2017 ]
Needed it to install my new stereo [ Austin  Jan 29, 2017 ]
Recommended as part of installation kit. [ Gerald  Jan 24, 2017 ]
Ease of Install [ Andrew  Jan 23, 2017 ]
This antenna adapter was suggested by Crutchfield after placing a new head unit in my shopping cart. It should be compatible with both my vehicle and the Pioneer AVH-4200NEX. This will be the first time I've installed a new head unit, but from what I've read this adapter is necessary to connect the stock antenna to the Pioneer head unit. [ Scott  Jan 13, 2017 ]
Wanted to get the complete install package rather than basic to ensure I got everything the installation people would need. [ Celina  Jan 09, 2017 ]
Crutchfield reputation , and sale price. [ Herbert  Dec 31, 2016 ]
My husband removed my factory stereo from my 2008 pathfinder & replaced w/ a jensen vx4022, however the new setup receives no radio signal. After watching tens of youtube videos, we finally realized we need an antennae adapter, which the installation manual for the new system never mentioned. We are hoping this adapter fixes the issue, as it would at least give use to the 3 wires remaining from the factory radio wire harness. Fingers crossed! Thnx crutchfield!" [ Thera  Dec 19, 2016 ]
Needed to use with factory antenna! [ CHRISTOPHER LEE  Dec 17, 2016 ]
To adapt aftermarket stereo to stock antennae [ Robert  Dec 14, 2016 ]
Fits my 2011 nissan altima [ Tyrone  Dec 13, 2016 ]
Necessary for my car audio [ A  Dec 11, 2016 ]
For the deck [ MARK  Dec 09, 2016 ]
i need it for the radio in my car [ AARON  Dec 07, 2016 ]
Quality [ Albin  Dec 01, 2016 ]
matches the equipment i bought [ David  Nov 29, 2016 ]
It was a choice [ David  Nov 28, 2016 ]
It's necessary [ John  Nov 19, 2016 ]
it came with check out [ David  Nov 16, 2016 ]
For easier install [ Jeff  Nov 03, 2016 ]
required for my vehicle [ Daniel  Oct 31, 2016 ]
it was a recommended item. [ Tennille  Oct 23, 2016 ]
Needed for instal [ Bruno  Oct 14, 2016 ]
Crutchfield graciously provided this item to make my install more hassle-free [ Michael  Oct 12, 2016 ]
Needed it for my Sirius service [ Troy Anthony  Oct 12, 2016 ]
It was free [ matthew  Oct 04, 2016 ]
This was not included [ Craig  Sep 19, 2016 ]
This was part of the package that was suggested to me by Crutchfield when selecting an item. [ ERIC  Sep 07, 2016 ]
Car requires it [ Ira  Sep 05, 2016 ]
Needed for installation [ Joseph  Aug 28, 2016 ]
I can use my factory antenna with this adapter! One less integration issue to worry about with aftermarket parts. [ Ransom  Aug 27, 2016 ]
Needed [ Kass  Aug 23, 2016 ]
To keep retain factory perks [ Robert  Aug 21, 2016 ]
included in kit [ John  Aug 20, 2016 ]
It was recommended for my specific car for installation of the stereo I purchased. [ Shad  Aug 08, 2016 ]
It was recommended as part of the installation gear. [ W  Aug 03, 2016 ]
It is needed to get AM and FM radio signals. [ Lynn  Jul 04, 2016 ]
Suggested by crutchfield [ Jessica  Jul 03, 2016 ]
I'm installing a after market stereo receiver into a 2010 Nissan xterra that has a factory radio, and i needed the adapters to complete the job, plus i always order all my car electronics from Crutchfield wander full place to order from. [ FRANCISCO  Jun 24, 2016 ]
It's part of the package. [ Elizabeth  Jun 20, 2016 ]
It was recommended by the web interface [ Joseph  Jun 14, 2016 ]
It was in the package [ VICTOR G  Jun 12, 2016 ]
Required to install radio into Nissan Cube [ Donald  Jun 10, 2016 ]
Crutchfield includes this in the installation kit for the stereo I ordered. The kit seems pretty comprehensive with wiring adapters, mounting hardware, bolts and this antenna adapter. I might have thought of most of the other parts, but I probably wouldn't have thought to look for an adapter for the antenna. [ Bill  Jun 04, 2016 ]
I wanted all of the original features to work the same as the factory intended. [ Kenneth  Jun 02, 2016 ]
its essential when installing an aftermarket stereo in a Nissan, if you want the antenna connected !! [ Richard  May 29, 2016 ]
Came with the install kit [ Bruno  May 17, 2016 ]
My installer recommended it. [ Robert  May 14, 2016 ]
I need to adapt my new sony mex-gs610bt to my vehicle's antenna. [ Thomas  May 06, 2016 ]
It's what was recommended for installation. [ Darren  Apr 26, 2016 ]
i got this because it is needed to properly install the radio to the factory wires [ fernando  Apr 24, 2016 ]
necessary for antenna to work, it also works as a ground connector when installing aftermarket radio, so need to connect it from the main harness or the chasis itself this will do the job. [ JOSE MARIA PALO  Apr 23, 2016 ]
I chose this stereo because it was in my price range and met my needs. [ Celia  Apr 16, 2016 ]
Needed to connect stereo. Works fine [ Joseph  Apr 12, 2016 ]
Great quality [ Derek  Mar 31, 2016 ]
Recommended for vehicle/receiver combo by adviser. Use an adviser, they know car stereo! [ Andy  Mar 28, 2016 ]
Good experiences with Metra in the past. [ Brendan  Mar 23, 2016 ]
This is necessary to connecting you after market head unit to your car. [ JAMES M.  Mar 20, 2016 ]
to assist with fast connections [ Hector  Mar 17, 2016 ]
Price [ Ram A.  Mar 11, 2016 ]
came with package with a great deal [ Zoffee  Mar 10, 2016 ]
said my car needed this [ Khalif  Mar 10, 2016 ]
A must to hookup your radio [ Mark K.  Mar 09, 2016 ]
Was told to make sure i get this item [ Walter  Feb 29, 2016 ]
becuse i needed for install [ alex  Feb 28, 2016 ]
Good well know name [ LOUIS  Feb 23, 2016 ]
I choose this item because it is a needed item for the purchase of the after market radio for my Nissan 370z. [ Dechon  Feb 22, 2016 ]
To adapt the radio to the car [ John  Feb 21, 2016 ]
Recommended by Crutchfield. That's all I need to know. [ P  Feb 18, 2016 ]
Need it to make the radio work [ Charles  Feb 11, 2016 ]
Free with my order and needed to connect my antenna to the aftermarket head-end unit. [ David  Feb 11, 2016 ]
Fits my truck [ William  Feb 09, 2016 ]
Installed one on truck other day. It's works well, so getting another one for my car. [ Sananh  Feb 05, 2016 ]
Best fit for my truck [ Jack  Feb 05, 2016 ]
It is the correct adapter for the stock antenna for my car and I need it to complete the install. [ Alan  Feb 04, 2016 ]
Need this for my 2011 Altima Sedan in order to use the existing antenna [ Evan  Feb 03, 2016 ]
Came free with my receiver, I trust Crutchfield for picking out the right parts for the install. [ ZACHARY  Feb 01, 2016 ]
Needed this "power" adapter for my Nissan Altima. I'm "old school" so when I saw the "power antenna" lead on the adapter I didn't think I needed to hook it up because to me a "power antenna" pops up when you turn on the am/fm radio. But it must be hooked up because the Altima has a "powered antenna". So make sure you hook up the lead! [ Tim E.  Jan 31, 2016 ]
gift for my son [ Judith  Jan 29, 2016 ]
was recommended and part of kit [ Mikael  Jan 26, 2016 ]
highly recomended [ Carlos  Jan 13, 2016 ]
Adapter for my 2014 Nissan Versa Note antenna [ Bradley  Jan 07, 2016 ]
It was free with the purchase of the radio. [ Dave  Jan 05, 2016 ]
Required to hook stock antenna on 09 Nissian Sentra to aftermarket head [ Jesse  Dec 30, 2015 ]
it was a recommended installation part [ james  Dec 21, 2015 ]
It was given as part of the installation kit. [ Allan  Dec 17, 2015 ]
good quality [ mark  Dec 10, 2015 ]
Wasn't given a choice as to which one. Most of these items are in a free kit but then if you choose the steering wheel adapter kit there is a charge for each. [ LOUIS D  Dec 05, 2015 ]
requirement [ Tracy  Dec 03, 2015 ]

2 questions already asked

Yes for all applications in the 2010 Nissan Altima the Metra 40-NI12 Antenna Adapter would be needed. Hope that helps. [ Kenny  Feb 27, 2016 ]  Staff
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: Or try our online support center: [ Krissy  Mar 19, 2014 ]  Staff

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