Firstly I dont have this addon, but there's a section in your aircraft.cfg:
[LIGHTS]        
light.0 = 1,   0.70,   0.00, -3.90, fx_beaconh
light.1 = 1,  40.00,   0.30, 10.57, fx_beaconh
light.2 = 4,  67.00,   2.00,  5.19, fx_vclightwhi
light.3 = 4,  67.00,   -2.00,  5.19, fx_vclightwhi
light.4 = 5,  15.35,   7.35,  0.10, cs757_land
light.5 = 5,  15.35,  -7.35,  0.10, cs757_land
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

These are your landing lights. You will have to add your parameters in those lines. If your lights-addon is just an effect file then just replace cs757_land with the files name.
Hope thisll help