Check the listing for details. PAC RP4-MZ11 Mazda 06-up Interface, Select Models. Condition: New. Listed at 134.99 USD. What's in the boxRadio replacement/SWC interface module (for Mazda) Wiring harness (RP4-MZ11-HAR) Steering wheel control harness (4-pin connector to 3.5mm/blue wire) Instructions About this itemWritten by Crutchfield's Jon Paul PAC's RP4-MZ11 radio replacement interface lets you replace the factory radio in select 2007-15 Mazdas. You'll retain your factory steering wheel audio controls, your vehicle's entertainment system, warning chimes, and the use of your factory amplifier, if present. This interface works with your Mazda's base or premium stereo systems, and retains your safety and convenience features. You'll also retain your Mazda's message display, which allows you to access your vehicle's system settings. Warranty: 1 year. Important Note: If your vehicle is equipped with the factory premium system, the amp fader must be adjusted through the RP interface. (See Details.) See Details for a list of compatible car stereos. Note: the interface does not retain your factory backup camera.