The effects section looks like this:
 

[EFFECTS]
wake=fx_dummy
water=fx_dummy
dirt=fx_tchdrt
concrete=fx_sparks
touchdown=fx_dummy,1
startup=fx_dummy
EngineFire=fx_dummy
vaportrail_l=False
vaportrail_r=False
l_wingtipvortice=False
r_wingtipvortice=False
contrail=False
WheelWetSpray=False
WetEngineWash=False

 

 

How could I add and place the lightshield correctly..?

You are correct you cannot, it's what comes of answering quickly.

 

Your only real option if the lights section does not work is to add as a smoke effect, however there are a lot there already, there may be a limit - I don't know. If you can add an extra one then you also have a problem turning it on - you would need fsuipc to do that I think.

 

It might be possible to add as a light and turn on via fsuipc - I don't know where and how the default lights are disabled, you could try asking on the support forum.