[ozorion]

The front and rear cameras are 560TVL analogue cameras. They connect directly to the iDrive control module in the console.

I've often considered the possibility of putting in an analogue splitter and a small 12VDC DVR in my F30 to effectively use the front camera as a dash cam, but have never gotten around to assessing the actual viability.

It might be worth checking if anyone on any of the forums has installed Bimmer-Tech's after market OEM camera - that way you could at least confirm what the connection itself looks like. I very much doubt it's a standard BNC.

EDIT: On further research, it appears the camera connection to the iDrive module is a conventional RCA connector (like on a television).