Just play around with it (set to max and view; set to min and view); there seem to be 4 attributes which can be changed.
This is what I ended up with on my P-51b; compare it with the default.
0.400,0.400,0.400,Ambient
0.600,0.600,0.600,Diffuse
0.000,0.000,0.000,Emissive
0.200,0.200,0.200,Specular
20.000,Power
One of them appears to make the plane emit light (Emissive). :-)