I know this is a older post but it has already shed some light on my project but also makes me curious about a couple of other things. I have a 2012 Sierra that has the OEM camera and video in the mirror. I am getting my pieces together to install a new head unit. I would to grab the video from my factory camera and run into my new head unit. If I grab the white and blue wire at the kickpanel and run direct to my new head unit, will I lose the video in the rear view mirror? That is what I am hoping..would like to only have video in the new head unit. Also if I run the blue and white to the new head unit what powers up the camera when in reverse? Thanks for any help!