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Released in October 2016, the AVIC-RZ500 is part of Pioneer's "Raku Navi" (楽ナビ) series, which translates to "Easy Navigation". Despite being a discontinued model, its build quality and feature set make it a popular choice among import car enthusiasts today.
This wire must detect a ground connection to allow video playback and deep menu settings. For off-road or passenger use, installers often connect this directly to the main Black Ground wire.
Pioneer Carrozzeria AVIC-RZ500 English Manual: Ultimate Setup & Translation Guide
, as the unit is a Japan Domestic Market (JDM) product. While no "new" official English manual exists, you can navigate the system and its features through partial language settings and unofficial community resources. パイオニア株式会社 Navigating System Settings