Japanese FM (76–90MHz) differs from Western frequencies (88–108MHz). You may need an FM Band Expander .
Illumination (dims screen when vehicle headlights turn on). Speaker Outputs White / White-Black: Front Left Speaker (+) / (-). Gray / Gray-Black: Front Right Speaker (+) / (-). Green / Green-Black: Rear Left Speaker (+) / (-). Purple / Purple-Black: Rear Right Speaker (+) / (-). Auxiliary Vehicle Signals pioneer carrozzeria avicrz500 english manual new