I am sorry but the nav lights cannot be fixed by a General10 shader change.
As an oddity they do come on during the engine start sequence but go out after a few seconds.
When its on we see two ergs separate by 5 that draw the rear light and the nav lights respectively
After a few seconds the lights go out.
The first drawcall (1015) for the rear light is still there but the other one isn’t
So if it isn’t there it cannot be fixed.