ok while I still not sure how the light effect through FX_Update was/is added to the lighthouses,
I made some progress in using the same settings as used with the imported buoys
here are some self illuminated small costal guns with flashing lights.
another finding with working with the bulid in GoblinEditorApp was that on Win7 with Aero design I could not change any controller values that are of type DropDownList. Has to change apperance to windows classic style in order to get those to work.