Stereo ANTENNA Harness Toyota Matrix 03 04 2004 AFTERMARKET STEREO / RADIO ANTENNA ADAPTOR - PLUGS INTO AFTERMARKET STEREOS AND CONNECTS INTO FACTORY ANTENNA
** THIS ADAPTER IS USED WHEN REPLACING OEM STOCK RADIO TO AN AFTERMARKET STEREO  ** PLUGS DIRECTLY INTO CARS OEM ANTENNA SOCKET AND THEN INTO THE NEW (AFTERMARKET) STEREO ** Radio Antenna Adapters are usually Required when Installing an aftermarket stereo for the first time  ** No Cutting or Wiring Needed - Plug N Play connection (no experience necessary)  ** Allows AM/FM Radio to still work w/ After market Antenna ** Connects the factory antenna cable to any aftermarket receiver  **KEEPS YOUR EXISTING ANTENNA FUNCTIONING WITH YOUR NEW STEREO  ** USUALLY A REQUIRED INSTALL PART IF FM RADIO IS TO BE MAINTAINED  ** Simply plug into the back of new aftermarket  radio and then into original Antenna wire plug