Pin assignment Pin Color Wire size Option Function 1 White 0.75 - Right Rear Speaker (+) 2 Yellow 0.75 - Right Front Speaker (+) (1) 3 Blue 0.75 - Left Front Speaker (+) (1) 4 Green 0.75 - Left Rear Speaker (+) 5 Brown-White 0.75 - Right Rear Speaker Signal (-) 6 Brown-Yellow 0.75 - Right Front Speaker Signal (-) (1) 7 Brown-Blue 0.75 - Left Front Speaker Signal (-) (1) 8 Brown-Green 0.75 - Left Rear Speaker Signal (-) 9 Green 0.5 - Mid Speed GMLAN Serial Data (+) 10 White 0.5 - Mid Speed GMLAN Serial Data (-) 11 Black 0.5 - Cellular Telephone Mute Signal 12 Brown 2.5 - Ground 13 Red-White 0.5 - Switched Antenna Enable Signal 14 White-Brown 0.5 - Front Center Speaker (-) 15 Red 2.5 - Battery Positive Voltage 16 Yellow-White 0.5 - Front Center Speaker (+) 17 Black-White 0.35 - Left Rear Seat Audio Signal 18 SCREEN - - Auxiliary Audio Screen (2) 19 SCREEN - - Rear Audio Drain Wire 20 Gray 0.5 - Rear Seat Audio Enable Signal 23 Black-Red 0.5 - Right Rear Seat Audio Signal 24 Violet-White 0.35 - Left Auxiliary Audio Signal (2) 25 Violet-Red 0.35 - Right Auxiliary Audio Signal (2) 29 SCREEN - - Noise Reduction Microphone Screen 31 Violet-White 0.35 - Left Auxiliary Audio Signal (2) 32 Violet-Red 0.35 - Right Auxiliary Audio Signal (2) 33 Yellow 0.35 - Navigation Display Serial Data Low 34 Yellow 0.5 - Cellular Telephone Voice Signal 35 Blue-Red 0.35 - Noise Reduction Microphone Active Signal 37 Blue-Brown 0.5 - Vehicle Speed Signal 38 SCREEN - - Auxiliary Audio Screen (2) 39 Blue 0.35 - Navigation Display Serial Data High 40 Yellow-Brown 0.5 - Cellular Telephone Voice Low Reference
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