Now that the addons are out, I installed Shockwave to both of them.
Freighter needs the same entries as -200.

You can use this for -300:

[LIGHTS]
light.0 = 1,   0.70,   0.00, -3.90, fx_shockwave_beacon_rotating_red.fx
light.1 = 1,  55.20,   0.40, 10.57, fx_shockwave_beacon_rotating_red.fx
light.2 = 4,  79.00,   2.00,  5.19, fx_shockwave_vclight.fx
light.3 = 4,  79.00,   -2.00,  5.19, fx_shockwave_vclight.fx
light.4 = 5,  15.35,   7.35,  0.10, Fx_shockwave_landing_light_small_xenon
light.5 = 5,  15.35,  -7.35,  0.10, Fx_shockwave_landing_light_small_xenon
light.6 = 7, -17.00, -47.00,  2.50, cs757_sf
light.7 = 7, -17.00,  47.00,  2.50, cs757_sf
light.8 = 8, 13.40, -17.47, 3.40, cs757_edge
light.9 = 8, 13.40,  17.47, 3.40, cs757_edge
light.10= 6,  69.90,    0.7, -4.70, fx_shockwave_landing_light_narrow_down.fx
light.11= 6,  69.90,   -0.7, -4.70, fx_shockwave_landing_light_narrow_down.fx