This is a radio conversion code required for Honda genuine navigation systems and Clarion car navigation systems. Please refer to the images for details. These can be surprisingly expensive when purchased new. I am selling items that appear to be usable without any problems, even though they are used, so you can use them with confidence. If you would like to purchase multiple items, please feel free to contact me. Navigation Audio Connector *Used item* If an electro-tap was originally attached, it has been removed before listing. Therefore, there may be exposed wiring where the insulation has been stripped. We recommend repairing this with vinyl tape or similar before use. *Shipped via non-standard mail, so there is no tracking number and it will take some time for the item to arrive.* (Delivery is only available on weekdays)