"It is blue. When I turn it on everything inside the garage goes blue also."

It sounds as though you are referring to the Poser preview, not to what is rendered.   Poser's preview isn't very good at representing lighting.   The render often looks drastically different from the preview.   Is the hangar-door still transparent, when you do the render?   Lights outside the structure should not penetrate to the interior.

I generally think that fewer-is-better is a good policy for lights.   You don't need to have an actual Poser light for everything in the scene that looks illuminated.   Once you have the lighting required for the scene as rendered, there are all sorts of ways to make the other lights look as though they are contributing, when, actually, they aren't.