Thank you for viewing. [Important Notes] ・Although listed as new and unused, the item has been opened. ・I realized the model number was different while trying to connect it to an aftermarket navigation system. ・The speaker wires, etc., have been connected once, but functionality has not been confirmed. [From the Manufacturer's Website] You can replace the factory navigation (MMCS) with a commercially available deck (navigation) with speaker output. If the aftermarket navigation system has a rear camera input, the factory rear camera can be used, and if it has a VTR input, the factory front and side cameras can also be used. All of the tweeters, front door speakers, and rear door speakers will function.