Nvm, I figured it out, all I need to do is add maxdistance "x", x would be like 16000
Here is the config file
mesh-table
{
  default
  {
    mesh                                "panneau.im"
    auto-create                         1
    
    effects
    {
      feuall1a
      {
        kind                            "corona"
        att                             "a.feu1a"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feuall1b
      {
        kind                            "corona"
        att                             "a.feu1b"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feuall1c
      {
        kind                            "corona"
        att                             "a.feu1c"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feuall2a
      {
        kind                            "corona"
        att                             "a.feu2a"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feuall2b
      {
        kind                            "corona"
        att                             "a.feu2b"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feuall2c
      {
        kind                            "corona"
        att                             "a.feu2c"
        directional                     1
        max-distance                    16000
        object-size                     0.14
      }
      
      feucli1a
      {
        kind                            "corona"
        att                             "a.feu1a"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      feucli1b
      {
        kind                            "corona"
        att                             "a.feu1b"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      feucli1c
      {
        kind                            "corona"
        att                             "a.feu1c"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      feucli2a
      {
        kind                            "corona"
        att                             "a.feu2a"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      feucli2b
      {
        kind                            "corona"
        att                             "a.feu2b"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      feucli2c
      {
        kind                            "corona"
        att                             "a.feu2c"
        directional                     1
        max-distance                    16000
        frequency                       0.7
        object-size                     0.14
      }
      
      name0
      {
        kind                            "name"
        fontsize                        0.09
        fontcolor                       230,230,230
        att                             "a.name0"
      }
    }
  }
}
For people who want to improve draw distance on signals here is a tip, not guaranteed to work on other signals but try it out.