Video and audio conversion territory

[getmo30]

I have just installed a Colour ICC into my territory it has this extra plug under it is this where the kit plugs into the icc?

Note this is not from my car but the plug looks the same



Also the video in for reverse camera can it come from anything that has RCA?

or does it have to be NTSC or PAL?

i already have a camera installed into a double din under icc be good if it could just plug that one straight into the kit

Thanks