Hi, I installed my Blackvue DR650 and a power magic pro about a month ago and I am very pleased with it. I don't seem to have any of the DAB signal issues either, I don't know if the ferrite rings I installed both ends of the coax has helped cure that. I also installed ferrite rings both ends of the power cable just to be sure. Its fairly self explanatory. The rear camera is almost invisible with the window tints during the day and in low light you cant see it at all. I installed the camera to the left of the rear view mirror so as to not obstruct the high beam assist camera and any of my vision, and I can still get the rear view mirror in the right position just about for my seating position. I used the live view function off the app to get both cameras positioned and if you get the front camera just right it wont look off center on the video, which was my main concern! I got the switched live from the cigarette lighter (as I still have mine on the default setting of only on with ignition) and permanent live from the 4 wheel drive I think it was. It was the only way I could get both add a circuits to fit in there nicely without fowling on anything. So far no problems at all. Ground I got from one of the main dashboard mounting bolts. In case you are wondering what all the bits of black tape are, that's my stealth mod! I did not want any white writing or LED's being visible for when I am parked up as I have the power magic pro set to run for 24 hours to keep an eye on the car when its parked up in public places. Any questions, feel free to ask.