The Sony CDX-M610 is a car stereo head unit. The colors of the wiring indicate what wire is for what function. Sony tends to use standard wiring for their units; meaning the wiring colors for most models are the same. Sony recommends that users have a qualified Sony technician install their Sony CDX-M610. The Sony CDX-M610 came with two wiring harnesses: a nine pin harness and a 16 pin harness.
According to Sony, the wire coloring for the nine pin harness for the Sony CDX-M610 is:
"Pin Number > Wire Color > Function
1 > Not Used > Not Used
2 > Black > Ground
3 > Grey > Right Positive
4 > Grey/Black > Right Negative
5 > Blue/White > Amplifier Remote
6 > Red > 12 Volt Switched
7 > Yellow > 12 Volt Constant
8 > White > Left Positive
9 > White/Black > Left Negative"
According to Sony, the wire coloring for the 16 pin harness for the Sony CDX-M610 is:
"Pin Number > Wire Color > Function
1 > White > Left Front Positive
2 > Green > Left Rear Positive
3 > Violet > Right Rear Positive
4 > Grey > Right Front Positive
5 > Blue/White > Amplifier Remote
6 > Blue > Antenna Remote
7 > Red > Accessory 12 Volts
8 > Black > Ground
9 > White/Black > Left Front Negative
10 > Green/Black > Left Rear Negative
11 > Violet/Black > Right Rear Negative
12 > Grey/Black > Right Front Negative
13 > Sky Blue > Telephone Mute
14 > Orange/White > Illumination
15 > Not Used > Not Used
16 > Yellow > Constant 12 Volts
Both units share the common Power (red) and Ground (black) wire colors. These are the universally accepted colors in mobile stereo installations.
The 16 pin unit includes front and rear functionality while the nine pin unit only has left and right wiring.
