OK - try this:

- identify the afterburner effect filename in the .cfg file you want to copy from, and note which section it's in (probably [lights])

- copy the filename reference into the [lights] section of the .cfg file you're moving it to, using the format:
lightxx=a, b, c, d, effect_file_name

where:
- xx is the next sequential light effect number (up to a maximum of 18 - FS ignores anything over this),
- a is the light type (beacon, nav light etc. - normally numbered 1-5 depending on what switch you want to use)
- b-d are the coordinates for the effect position - TIP: copy over the coords from the engine positions. They are in the same order so that the effect will be roughly in the right place.

Then you can tweak the location coords until you've got it exactly right.

That should start you off.