Connecting USB6343 onboard 5v to AI 4 5 6 7 through 4 switches and AI GND results in floating signals and noise

Hey,
I am connecting USB6343's onboard 5v source to AI 4 5 6 7 through 4 switches (and AI GND). This results in floating signals and sinusoidal noise when i close the switches and not the expected 0v / 5v.
I merely want to report on or off for each switch connected to the AI terminals, what very obvious step am I missing?

I'd like to ask further questions, but being new to the forum, I'm not fully familiar with the customs, so please tell me if I should open a new topic or if it's okay, to bundle questions (if related).
The question are: how to extend the described wiring to multiple switches (I need 10)? I attached my assumption as "Wiring 1.png".
And I guess "Wiring 2" wouldn't work as it'd be how the topic-opener artaxerxes did it?
Attachments:
Wiring 1.png ‏9 KB
Wiring 2.png ‏11 KB

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Connecting USB6343 onboard 5v to AI 4 5 6 7 through 4 switches and AI GND results in floating signals and noise

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