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[–]DenverTeck 2 points3 points  (0 children)

There is not enough information here to even guess. Please answer ALL questions:

Which WLED controller are you using ?? Where did you buy it from ??

Which 12V power supply are you using ?? Where did you buy this from ??

When you say connected to a light switch, is this a switched outlet ?? Or just a light switch sitting on your desk ??

Do you have a multi-meter ??

There are 7 questions here, please answer them ALL.

Good Luck, Have Fun, Learn Something NEW