CRUX SWRMZ-64CCRUX (SWRMZ 64C) RADIO REPLACEMENT W SWC RETENTION FOR SELECT MAZDA VEHICLES 2002 UP The CRUX SWRMZ 64C is a radio replacement interface for select Mazda vehicles. It facilitates the integration of an after market radio to enable retention of certain factory features when replacing a factory installed radio and is also pre programmed for retention of steering wheel controls. FEATURES: Retains select factory features while functioning with an