330D
From My Cold Dead Hands
I assume the larger plug is the car side, and the smaller is the stereo side. The colors should almost correspond. Yellow is constant power, red is switched, black is ground. Dimmer wire is orange/white, blue is amplified antenna power. As far as the other bunch, white and white with a black stripe is left front speaker, gray/gray black is right front, green/green black is left rear, purple and purple/black should be right rear speaker. These are the radio side connectors. Hopefully that is what you need.