Installing car stereo in BMW wiring for a Pioneer Diagram colour codes radio cd bluetooth wires

I installed a Pioneer Stereo into a 2005 BMW 1 series. We didn't buy the expensive plug & Play dongle, so I sourced/tested what each wire did and I show you the results here.
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Thanks for watching this Mark's reviews and Tutorials video. Mark is not a trained mechanic. Just a car guy that loves to drive and work on cars. What I do here may not work on your car and I am not intending to give professional advice for you to work on your car. But if you do know a bit about cars then hopefully watching these videos will help you to sort out what is going on with your car. Mark is not liable or responsible for any damage you do or things that happen to your car or yourself.
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Where did the red power originated from with the wire harness how I connected cigarette lighter to my new Android radio but I needed to know when I turn the key on where would I connect key one and key two if not that from the wire harness where is positive always on