Cell Phone Wire Cluster - What each wire is for?

I have been looking for ways to install my cell phone hands free kit. I found the wire cluster for cell phone connection tucked under the center console of my 2003 330Ci.

I'm wondering is someone call tell me what each of the wires are for.

Thanks in advance.

These wires may have changed over the years, but check http://how.to/startac and see if they're the same as yours.