So I've installed a DPDT-switch to operate a motor, but it seems every time I put the DPDT switch on the stainless steel it stops working. I assume it creates a short-circuit on the DPDT switch's legs. But, I thought electrons would much rather flow in copper/silver/lead etc than in stainless steel (which taking into account the wires, the switch, the motor and the electricity adapter I assume that's what they're made from). Isn't that one of the guiding principles of electronics: electrons will always flow where it's easiest for them?