I went to an estate sale and one of the things that I ended up with was a vacuum system. I have a Grizzly G0766 that I want to connect to. I’m missing something, but I’m not sure what.

The gauge and plumbing pieces were mounted on a board on the wall.what is the red thing for? I’m guessing a drain for condensation? What is the black tube for? What does it connect to?
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The clear tubing went from the board to the “in” on the motor.
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The tube from the “out” on the motor ends at the brass connector that looks like it’s supposed to connect to something else.
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These chucks came with it. Unfortunately, they are threaded for 1x8 and my lathe has a 1 1/4” spindle. I’ll either try to adapt those or start over.
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This is the outboard end of the spindle on my lathe.
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How do I connect the tube from the motor to the lathe? Is there anything else I’m missing?

Thanks for any advice!

David