Hello. Did you need a special wiring harness or anything? Did the generic 2 DIN Android stereo just come with all of the wiring and other bits and pieces needed to connect it to the built-in audio? Do you still hear the Japanese voice prompts, etc. or is that generated from the factory head unit? Does your vehicle have composite/RCA connectors in the back so you can connect old video players and/or a screen mounted to the ceiling? If so, does that still work?