Airport Lights On Buildings

Hello again,
Am trying to make solid red beacons to add to rooftops of buildings which surround an airport. Using FSDS2 to create all scenery objects here. I have managed to get flashing beacons operational, this is done by naming the lamp-object as light_beacon and then setting the pre-process to "beacon on". Have tried changing the light name to light_nav (altho this is for aircraft of course), and the pre-process to "dusk/dawn", "night" and "dark". None of the other options seem to work. Any ideas?
Am trying to make solid red beacons to add to rooftops of buildings which surround an airport. Using FSDS2 to create all scenery objects here. I have managed to get flashing beacons operational, this is done by naming the lamp-object as light_beacon and then setting the pre-process to "beacon on". Have tried changing the light name to light_nav (altho this is for aircraft of course), and the pre-process to "dusk/dawn", "night" and "dark". None of the other options seem to work. Any ideas?