I did my install very similar to theaudir8fan. I used this video as a guide
My front camera is to the right of the rear view mirror, out of my sight, running the wires to the top of the passenger side towards the back, tapped into a fuse in the back, and rear just underneath the 3rd brake light. Like theaudir8fan, I leave my PMP off since BMW likes to leave the battery running for a good 15-20 minutes before turning off so my Blackvue is still recording for that time after I turn off the car. If I will be parked longer, I will turn on the PMP and I have it set to unlimited time, 11.8V.