Hi...i'm using very big van so i like to know if i want to install the rev camera but i want the lcd viewing the back is always on just like viewing the back mirror, can it be done like that?? Meaning i just dont want it to display only when we engage to reverse gear bcoz the power only be taken from reverse light, so is there any other power source can we connect to the camera?

And which one better for this purpose...wire or wireless?

TQ