The stock 747 in FSX has no strobes or red/green nav lights on its wings. I added them in the [LIGHTS] section of "aircraft.cfg". They look great and function with the VC switchs, but after you leave the ground and the wings flex, the position of the light no longer match that of the flexed wing. Is there any way to compensate for this?

Peter

Note, this is my addition to the CFG file:

light.6 = 8, -149.60, -103.80,  -2.55, fx_navredm ,
light.7 = 8, -149.60,  103.80,  -2.55, fx_navgrem ,
light.8 = 2, -149.60, -104.00,  -2.55, fx_strobeh ,
light.9 = 2, -149.60,  104.00,  -2.55, fx_strobeh ,

Gary is correct - if you have a moving component, any light (effect) attached to it MUST be attached in the model file.

Adding lights, etc in the aircraft.cfg file only place it in space.

The MDL file is in a compiled state, and not easily modifiable.

While there are ways to decompile an MDL file, for practical purposes, you can't do much with the result.  Animations, effects, let alone part names, aren't carried over, so although you can "add"  stuff, you practically have to rebuild and reaniamte pretty much everything.