GAUGES NOT WORKING PROPER

Sorry i am very stupid when it comes to wiring. Can someone tell me what i did when came to switching that wire from one stud to another ? Where to start and how to find the problem. I have no testers
Would you randomly plug a wire into one of the 3 hold on a wall outlet in your house?

2 of them will not (typically) shock you, 1 will kill you.

If you don't know what you are doing don't just randomly plug things into other things.