..:: FRONT- STEP 1 ::..
Now we are making the front lights. Just reopen (or if it's open already - swtich back) to the DetailsDiffuse.dds.
Just look above to find the all the stuff for the front lights. I will explain the easy way to create the lights like they're shown on the picture.
The front and rear lights also have glasses on front of them. The trick to get lights like that is, that you are making everything that is behind the glass glow. And the glass itself gets no opacity. Just a thin line gets full opacity, where the glowing light that is behind, can shine through. That was my idea after hours of trying, and it's working!
Now there's a really hard thing to to... Just paint over everything front related with black! ... Yes! Just do it! So you get everything in black ingame. Aplha channel can be untouched.... hardest step of all
I mentioned the glass above. It's also in the same file. Look the first post to find the glasses. The lower left suqare is the one for the front lights. Just draw two black bars on the top and bottom of the square. The more white the color is, the more transparent it will be. White is most transparent, black let nothing through. As you can think of, the light behind that glass, will only find the way though the white area.... lower left square for front lights - Black area blocks the light
Also here the aplha channel can be untouched. The glass don't uses the alpha channel. Just the greyscale.Edit: ...ok it don't uses JUST the greyscale. Thanks to Balmung. Just tested around. You can surely add colors to your glasses. But the the brightness in fact decides the opacity of the glass.
That's it in the DetailsDiffuse.dds. Export the file and move over again to the DetailsIllum.dds.....:: FRONT- STEP 2 ::..
Now reopen or switch back again to the DetailsIllum.dds file. This will make our stuff behind the glass glow. In this file, everything is related to colors and aplha settings. You can imagine that you need to find all the stuff you created black for the front lights one step before.
The easiest way to get the exactly match is to make a selection of the whole picture, excluding the black painted area made in the other file. Copy the selection to the second file and inverse it. now you have the exactly position of the stuff you need.... everything made the same color
As you see i just painted all over with a light blue. so everything thats behind the glass will glow blue. Now make a selection of all the blue again and move to the aplha layer. Fill the area with grey (#ababab). This gives me the bloom and glow effect you see on the picture (only if you have bloom enabled in game).
Export the file and you're done! That's it!