About the Metra 40-HD21 Antenna Adapter
This antenna adapter lets you connect an aftermarket antenna cable to the factory radio in your Honda. The adapter has a male Honda plug on one end and a standard female Motorola jack on the other. Warranty: 60 days.
You'll also need a second Honda adapter if you are connecting an FM modulator to your factory radio.
More details on the Metra 40-HD21 Antenna Adapter
Compatibility: The Metra AntennaWorks Honda vehicle antenna adapter cable (40-HD21) converts the Honda factory radio antenna plug to a standard motorola plug for installation of an aftermarket antenna in a 2009-up Honda vehicle.
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