This may not be totally realistic of the real Karachi, but I have produced an update for night lighting. The area around the PIA Ispahani Hanger is fully illuminated.
There are 3 files, one for the lighting and two others that will install various other scenery items in and around the Hanger. Yes you choose if you want all or just one part of the scenery.
You must have Rwy12 installed, available from Flightsim.com and the last update for Karachi to see it at its best. Also would advise Xeon lighting (gives blue effect) available from Flightsim.com.