I usually turn on the PCL if the cloudbase and Vis are not great , even if it is still VFR. Here in Ohio the summer haze can make spotting the runway a little challenging at times. Turning on the lights can act as an attention getter.. your eyes are attracted to a sudden change (caused by the lights coming on) and you instantly can locate the airport. King Air equipment can range from basic to very advanced. All that I have flown are equipped with a minimum of 2 coms radios, 2 Nav radios, transponder, radar, autopilot,flight director and GPS. The King Air’s I am fortunate enough to fly also have Weather uplink (very nice to have), TCAD for traffic awareness and TAWS (also nice to have when shooting an IFR approach in the Appalachian mountain range, which we do often).