You Need This. . . . :
Lcannon. shader
models/weapons/lcannon/lcannon
{
   cull disable
   {
      map models/weapons/lcannon/lcannon. jpg
      rgbGen lightingDiffuse
   }
   {
      map $whiteimage
      rgbGen lightingDiffuse
      blendFunc GL_DST_COLOR GL_SRC_ALPHA
      detail
      alphaGen lightingSpecular
   }
   {
      map models/buildables/mgturret/ref_map. jpg
      blendFunc GL_DST_COLOR GL_ONE
      detail
      tcGen environment
   }
   {
      map models/weapons/lcannon/lcannon_glow. jpg                
      blendFunc add
      rgbGen wave sin . 98 . 02 0 5
      detail
   }
}
This is For what glow On 
      map models/weapons/lcannon/lcannon_glow. jpg                
      blendFunc add
      rgbGen wave sin . 98 . 02 0 5
      detail
And One Photo What Got The Glow  In Parts what you want
Lcannon_glow. jpg    

       when copy url remove the spaces that are not going to put me with spaces
