Don't understand what this is, I was told it was probley a splice in the wires to extend wiring but I thought white had to be with white, black with black and ground to ground.....is this something that needs to be in a junction box ??
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It could be a switch loop, that box would be legal as a junction if a cover was installed. I would want to clean that up with wire nuts and tuck the wires in the box and add a cover.