I want to use a backup camera in the typical fashion where it recognizes reverse gear and the screen automatically changes...but I'd also like the option of being able to see the view from a front camera when I choose to turn it on.

Is that possible? And the option to record the video from either camera would be nice too....

thanks!

You could have the output from the front mounted vamera going into the D3's auxiliary input, and any time you wanted to use the front cam, just turn on the AUX source. But I would think you'd need some kind of video recording device if you wanted to record video...