Hello

I am new so please have mercy when I ask stupid questions ;p.
So I have a Nissan nv300 (same as the Renault Trafic III) and I am going to install parking sensors on it and possibly also a reversing camera.
All I would like to know is if there is anything that I should keep in mind when doing this, and also what wiring I should connect these to I presume using the reversing light would be the best option, but what if I want to use the camera/sensors when not in reverse? Especially if I am going for the auto dimming rear view mirror, can I use the dome light wiring to tap in to, or should I use other wiring? I imagine a wiring diagram would also be helpful for this but I haven't been able to find one.

Kind regards,
bJob