Hi. Thanks. Yes, I am happy too that that issue is solved. Cant thanks member AMP enough for his help.
So far, its been 3 days and ZERO issues.
Re: your question, to summarize function of this wire - this is the relay trigger wire I think anyone should tap to if you are adding an after market audio equipment. This wire provides 11 - 12volts to command an audio equipment to turn on whenever the stereo amp is on and turn off whenever BMW audio power amp is commanded off.
Conditions / State:
Door open: +12 V.
No activity 5 minutes after door open: +12V powers off.
Ignition Switch on Pos 1 (accessory mode) +12V.
Ignition Switch on Pos 2 (Ignition on) + 12V
Engine Start: Constant: +12V
Engine Shut down: +12 V.
No activity after engine shutdown: In 5 minutes 12V powers off.
Regarding location of CCC connector, it is right behind the Navigation DVD drive.
See photos here:
Glad you found the wire you needed without running stuff down the A-Pillar. Is the RAD_On wire you found live when the ignition is in Position 1? From my understanding, the wire is live with how the Radio/CD player works with the car then...
Also, please point me out to the whereabouts of the "Main CCC" connector. Thanks.
Judging by the pics, the main CCC/Radio Stack needs to be removed, correct?