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Metra 40-HD11 Antenna Adapter

Works with select 2009-up Honda vehicles (Motorola male to OEM antenna female)

Item #: 12040HD11

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10 Reviews | 1 question - 4 answers

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This antenna adapter lets you connect an aftermarket car stereo to the factory antenna cable in select 2009-up Honda vehicles. The adapter has an OEM female plug on one end and a Motorola male plug on the other. The adapter cable also features a blue wire which connects to your aftermarket radio's power-antenna/turn-on lead. 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-HD11 Antenna Adapter Reviews

Average Customer Review:

10 Reviews

As advertised

Written by: AaronW from Niagra Falls, NY on September 1, 2015

2012 Honda CRV
Crutchfield Customer Review (What's this?)

Works well. There are no installation interactions provided, so check your headunit for which wire to connect to the blue copper wire.

Pros: Works

Cons: No installation instructions.

Worked as described

Written by: Jbone from Richmond, VA on July 21, 2015

2014 Honda CR-Z
Crutchfield Customer Review (What's this?)

This part worked fine in my Honda CR-Z. Plug and play.

Pros: Fitment into factory harness.

Cons: None

Just what I needed

Written by: Bobby C from Pennsylvania on June 20, 2015

Crutchfield Customer Review (What's this?)

Just what I needed to complete my install. Perfect! Thanks Crutchfield.

Pros: Perfect fir the job


Good product

Written by: Ian from Carmel Indiana on June 8, 2015

2013 Honda Civic SI
Crutchfield Customer Review (What's this?)

Easy to use antenna adaptor.

Pros: Easy to use.

Cons: None


Written by: Anonymous from Bryans Road, MD on December 7, 2014

2014 Honda Civic LX
Crutchfield Customer Review (What's this?)




Great adapter for aftermarket radios

Written by: Jim from Milford, OH on November 30, 2014

2013 Honda CRV
Crutchfield Customer Review (What's this?)

Not a lot to say. This little adapter plugs into Honda's proprietary antenna connector and converts it to standard antenna connection for your aftermarket radio. Plug each end in and your done!

Pros: Easy as pie.

Cons: None

Antenna adapter

Written by: Amarin from Florida on November 30, 2014

2013 Honda Civic LX
Crutchfield Customer Review (What's this?)

Very good work well

Pros: Good

Cons: None


Written by: j from charlotte, nc on September 21, 2014

2012 Honda Civic LX
Crutchfield Customer Review (What's this?)

Works great



Works great in my Honda CR-Z

Written by: RHS from New England on October 23, 2013

2013 Honda CR-Z
Crutchfield Customer Review (What's this?)

Works perfectly in my Honda CR-Z, easy to install, does exactly what it is supposed to do.

Pros: Easy to install, works great

Cons: None


Written by: Bryan from Palatine il on January 6, 2013

Crutchfield Customer Review (What's this?)

This was the one part from the system that did not fit. Not sure it was the right car model but I went and bought the right one and it worked fine.



Hands-on research

What's in the box?

Download owner's manual

  • Honda vehicle antenna adapter cable

Product Research


Compatibility: This antenna adapter allows you to connect an aftermarket receiver to a Honda factory antenna lead. This adapter is for select 2009 and up Honda vehicles.

Installation Note: A blue wire is attached to the antenna adapter. When installing the adapter, the blue wire should be connected to the antenna turn-on lead of your new head unit.

Our Product Research Team

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Customer Q&A

Crutchfield asked  
Why did you buy this?

needed for installation [ Michael  Jan 27, 2016 ]
To allow my upgrade to use factory wiring [ Scott  Dec 22, 2015 ]

1 question already asked

blue wire connects to the aftermarkets radios' power antenna/ turn on lead. [ Charles  May 11, 2015 ]
Check the wiring harness for the main head unit- there should be a corresponding blue wire to power the antennae amplifier in the car. If not, this simply needs to be connected to a switched 12V out (e.g. the power amp 'on' wire). [ George  May 11, 2015 ]
It's for power, if you have a power extending antenna you would hook the blue wire to the power for the extension motor. [ Tommy  May 10, 2015 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  May 10, 2015 ]  Staff

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