2014+ Nautique tower pre-wired question

The Nautique tower have 4 pre-wired tower speakers.
On mine (2017 Nautique 210) i have a pair of Roswell Neptune (with a led ring that lights up with courtesy lights).
So That let me 2 pre-wired tower speaker knob.
Maybe it’s a noobs question but I just want to be sure before cutting anything.
I removed the rubber knob and 2 wires group are attached 1- one black, on white. 2- five multi color little wires.

The 5 wires are (probably) for sound and the black/white for lightning (power).
So can I plug a LED light on the black/white wires? And would it be lightning with courtesy?
Maybe somebody did it. Because everybody I’ve seen wired their tower led light from the bottom and put a switch on the dash..
I prefer to light them up with courtesy lights because the light have an On/Off button on it, no need another on the dash.

My boat is winterised and I can wait till spring to check the voltage. Put on courtesy lights and see if current goes in these wires. But if I have the answer i can directly plug them this weekend.
Thanks.