Just received my dash cam... Rexing V1P. Thinking about placing it on the shroud that covers the rear view mirror/camera but, there are some "slits" at the very front of that shroud. Does anyone know what those slits are for? Are they the microphone? Temperature sensor? I don't wanna cover them if it's a necessity. And where did you place your camera? This model has a rear camera also if you could give me a recommendation for that too please...