A:Answer @Kristin, 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 is available in this link https://www.sony.com/electronics/support/mobile-cd-players-digital-media-players-dsx-series/dsx-m55bt/articles/00028631. We recommend contacting a professional installer to determine its compatibility and operation. Thank you!- Romeo