Did this Pioneer built into a Polo 9N3. Has good fit. FYI black mass, Yellow is the continuous voltage and red the ignition voltage. Simply plug the quadlock tensions measure connect properly and finished. (Of course, fitted with Quadlock to ISO Adapter for almost 10) Aperture also fit very well. That the radio in English is bothers me very little. Only the user might be as a book case and not as a CD. Therefore, a minus point. Speakerphone and Bluetooth connectivity also work very well, and even faster than my RNS510 in the Gulf. 6