No worries, it's a step in the right direction!
I found a post that someone left a few years back on another site about a similar question, which suggested an .xml...which, when converted into a .bgl and installed, put lights on an object:
<?xml version="1.0" encoding="ISO-8859-1"?>
Whereas capital Xs are user-installed values. So, I did as directed, in the exact format, set the altitude a touch higher than the object, saved, ran through BGLCOMP, and it converted. Then I installed, loaded FS2004, took off, headed to the objects at night...
Nothing. So, that one doesn't work at all. Or perhaps not for GMax objects.
I'll give FSDeveloper a try as you suggested. Thank you very much!