Windows Rain Texture

I have tried to look through this forum and other places but couldn't find an answer, but here goes...

I've got to the point of mapping rain texture onto the windows of my bus. My understanding is that, once I get the window mesh finish, and have it mapped to the window texture, I need to make a copy of the mesh, map that to the rain texture (regen.bmp), and it should be fine. I tried this on one of the windows, and this is what I ended up with:

Now as you can see, the window in concern becomes a bit of a see-through, comparing to the other windows that I have to done the rain stuff. My question is, what have I done wrong?

Many thanks.

No I didn't. Is it where they are supposed to go?

Thank you, I have sorted that one out, but run into a 2nd problem: wiped effect on windscreen.

For the windscreen itself, I understand that for the part where the wipers wipe on, it needs to be a separate object, is that correct? This I have done, with two layers in that mesh - one for the glass texture, the other for the rain texture. However, I have not made a 3rd layer and map it against a dirt texture. Is this final part required to make the wiped effect on the windscreen to work?

As I added the object into my model.cfg file, this is what I put in:

Same old question again - where has I got it wrong?

Thanks again.

UPDATE - 10/11/13: I have successfully solved the problem and now the wiper effect works faultlessly. It was because I put the wrong lines in the model.cfg.

Nevertheless, many thanks for FF3170 and Chris for your help.