Just got my z1 today. I have the bluetooth adapter and im going to do the update tommrow. i did the sminntech method where you ground wire#2 on connecter # 2. that was easy. but i dont get what this means? Do not permanently ground the vehicles parking brake switch wire. what wire is that (colour) and does that mean put a switch in? how can you not permentaly ground it. I want to have everything working, playing videos while im driving ( for the ladies) and using gps/navi. speed sence wire? what do i do with that. what colour is it? also if i burn a dvd as data in mp3 format, will the voice re