A:Answer Hi Nancy, Because of the number of variables encountered with different makes and models of automobiles, Sony is unable to assist with the installation of car stereo and mobile audio systems. However, if you are using a wiring harness, further information about the wire color and function of each pin on the wiring harness please visit this link: https://us.en.kb.sony.com/app/answers/detail/a_id/40979
Sony recommends that the installation be completed by a professional, qualified installer. -Jerome