Oh God, with your help I finally did it! Is it possible that you could be mistaken in writing the "kind" of light? I am asking (and please excuse me: I certainly don'twant to appear rude), because you used a light of type "named" instead a light of type "param" in your example (and I guess is a typo) as I instead did, but after some tries the result was: LIGHT_PARAM full_custom_halo 0.000000 26.866600 0.000000 255 170 130 0.015 220 0.0 -0.6 -0.6 0.000while before they were: LIGHT_PARAM sodium_flood_XYZBTSS 0.000000 26.866600 0.000000 0.0 -0.6 -0.6 2.5 300 0.6 0.0as they appeared here (from a thread at X-Plane.it): (I hope not to exceed the maximum image dimension and size and resolution and quality admitted buy this forum; if so, I apologize. Please feel free to reduce them or delete them as rules state) Now instead they look astonishingly good! The result is incredible!!! I'll look forward to do some tweaking into their parameters tomorrow (now I am so tired and a bit drunk... You know, going out with some firends and drinking red tuscan wine and vodka after the meal, well... ehm ehm, it doesn't help too much! ) but the result seems beautiful...! Tomorrow I'll fine tune it! And I'll report my improvements along with some screenshots, possibly. Now Florence Peretola LIRQ appears to be looking finer and finer, and that wouldnt' have been accomplished without your incredible help. Help for with I am grateful. Thank you, Tom, from the bottom of my heart. Be well. PS: Hmmm... are we absolutely SURE that those kind of lights are switching OFF during daytime...? I continued in my tests and it seems that they are ON even under plain sunlight... Am I wrong (I hope so)?