Metra 40-NI20 Antenna Adapter

Works with select 1984-09 Nissan and Infiniti vehicles (OEM male to Motorola antenna female)

Item #: 12040NI20

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4 Reviews

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The Metra 40-NI20 antenna adapter lets you install an FM modulator to the factory OEM radio and Nissan OEM diversity antenna. It includes an OEM jack on one end and a male Motorola jack on the other. Item 12040Ni10 is also required. Note: the male Motorola plug is not used. Warranty: 60 days.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

Metra 40-NI20 Antenna Adapter Reviews

Average Customer Review:

4 reviews
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great product

Written By bruce, alabama on Saturday, November 01, 2014

Crutchfield Customer Review (What's this?)

great product

Pros: easy to install

Cons: had to rip the whole dash apart

Not for all Nissans

Written By Anonymous, phoenix, as on Saturday, December 17, 2011

When I first installed could not get hardly any reception. I only have one antenna connectioin in my 2000 Nissan Maxima that connects to this adapter. The problem was, the second part of the adapter(for which there is no connection in my car) contains the ground wire necessary to close the antenna loop. I ended up cutting that adapter and soldering the center pin to the ground shell of the lead that connected to my reciever.

Woks good

Written By David S., Avenel NJ on Sunday, April 17, 2011

Crutchfield Customer Review (What's this?)

Works good, two are needed. After both were delivered, the bag has a number for both adapters as a kit. Why did I pay for two. I would think the kit would have been cheaper.

Works well

Written By Michael, Arlington, VA on Monday, January 28, 2008

Crutchfield Customer Review (What's this?)

I had to use this for my Kenwood KCA-200 Media Controller and they seem to work well.

Hands-on research

What's in the box?

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  • Nissan vehicle antenna adapter cable

Product Research


Overview: The Metra AntennaWorks Nissan vehicle antenna adapter cable (40-NI20) converts the 2-pin connector of a Nissan diversity factory radio to a motorola connection for installation of an aftermarket antenna.

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