I don't know of any videos: unfortunately, mine has been by trial and error. I don't have third part many add-ons and I don't fancy going through the pain of making changes to all of them to get the lightig right, so I hope something might come about.
My workflow (since Michel has posted about the FX editor) is load all files into Notepad++, make changes, click File>Reload ALL in the FX editor and press L to turn the lights on/off. Not sure about external lights on scenary: you might need to adjust the time slider to re-trigger the fx change to load.
V5:
Falloff Exponent=2.00
Intensity Day=10.00
Intensity Night=20.00
V6:
Falloff Exponent=1.00
Intensity Night=40.00
Intensity Day=10000.00
The key changes are the exponent (I found it being set to 2 gave far too harsh a light), and the day intensity. Night needed changing after reducing the exponent.
I think it's fair to say I've got it close to being the same, but not quite perfect. Hopefully you can use it as a starting point and use these values as guides.
I've not played with any of the other settings: I don't have the time or enthusiasm. It's certainly been an eye opener into what a developer must put into developing an aircraft. The amount of time spent must be mind boggling.
V5 Dusk:
V6 Dusk:
V5 Night:
V6 Night: