You are having a grounding or other issue. First off.. your wires look horrible and might be causing the problem. So ...let's fix the visible issue first. There isn't any real power that goes through the switch, I'd take a look and maybe pull the console out to make sure the wires aren't pinched under it.

here's a schematic of how they work


Literally it's power to turn the relay under the seat on and dash illumination.