I just did add lights on my 2320. The wires you need are not connected to anything (there will be 4 of them, 1 power and 1 ground together X2)and will be tucked away behind the plastic and the 3PH upper link. the factory wiring is long enough to reach to the base of the ROPS.
I wired mine with relays also so the factory wiring is just powering the control side of the relay and ran a new wire to the front to power the lights.
I also added a switch(between the factory harness and the relay) so I could use the factory light switch as the master and also be able to select which lights I want (Hood, ROPS fwd facing and/or ROPS aft facing).