Hello to all, I just had my z2 installed in my Charger SRT8. the shop that did it, did a great job but did not want to do the whole bypass for me. no biggie, still happy with the work. they did hook up the brake wire to a ground but that was the only wire. now my question is, i know if you are not using the mute wire, to move it and use that as a ground. what if you are using that wire because of the blue tooth. what other wire or how should i ground out the second wire location. thank you.