Need help with interior modding

[Werewolf]

Hello

I am trying to make new modern interiors for submarines using S3D and mm3d and I am in desperate need of help

All the new instruments and modules that I enable show up in the game either as completely dark or shining bright and ALWAYS with no details. I make the new modules from the stock ones in SHIV so that I can use the textures from the game, since I don´t know how to make textures at all. After I have made a module/instrument whatever I meticulously redo the texture coordinates for the textures and lightmaps and everything looks okay in mm3d, that is the dials look like dials, buttons like buttons and everything has the right colour and lighting, but once it is imported into the interior model using S3D it looks like s...! frustrating like h...!

Does anyone have an idea of what I wrong or could anyone guide me in the direction of a good and easily understandable tutorial for this kind of thing.

Furthermore - could anyone tell me what all of those mapchannels actually do and how this is connected with the individual textures/materials listed in S3D because I have a hunch that this is where I go wrong.........AND those light nodes in S3D, what are they about? They are used to light up things, but I have a feeling that some are used to light up objects like some kind of background lighting or reflection and others for actual light cones .... I have a feeling that this is where I go wrong too because once I tried to make a completely new room and everything was pitch black