How do skins work?

I would like to know how skins get onto vehicles, and how do I map a skin into Blender. I tried using MixRGB in Blender, with the carname_d texture and the carname_skin_carskin texture. But it created this weird texture monster thingy that didn't line up at all.

 

You can read this:
https://wiki.beamng.com/Introduction_to_skin_system
And this, also the video is pretty helpful:
https://wiki.beamng.com/Simple_skin_tutorial

 

If you don't have an answer, please shut your mouth..
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It barely provided any information to me, but what is "Second UV map"? The documentation for this seems very lazy.

 

Here documentation on UV maps

https://docs.blender.org/manual/en/2.79/editors/uv_image/uv/layout_management.html

You could try googling this first before asking

 

I know how UV maps work, I'm just wondering what this "Second UV map" thingy in BeamNG, and why it doesn't want to be imported to me in Blender?
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i FORGOT there are multiple UV maps for each part! This seems to make the skin problem to go away, but it makes a big problem. The main texture is broken now. How do I get it so that a different UV map is there for each image?

 

yep that’s the documentation and wiki for ya

 

Hmm, is it me or is this hood a lil scratched? (I can only use one UV map in render, is there a way to bypass that?)

 

I found this "UV Map" node which HELPS really WELL! You do have to seperate each material for each part, but it fixes the mapping!