Mazda auxiliary input interface for tribute and b series truck , radio must have external cd changer controls press CD button twicd and it will display NO DJ NO CD
audio input interface will allow you to input audio inot the Oem Mazda radio , you can use this for any portable audio source iPod iPhone mp3

Fits:
Vehicle specific information:
- Radio must have external Cd changer capabilities.
- Not compatible with factory external Cd changer present. (Takes place of changer)
- Connects to 20-pin connector at headunit.