@qwazix @thegibson I know that a lot of things work in either direction, but for some reason, either the sockets or the specific type of bulb, these didn't light when hooked up backwards. I'm thinking it might be they were LED bulbs that wouldn't work backwards. I haven't tested the bulbs and the sockets independently to figure it out exactly. Guess I could find a lamp that doesn't use a polarized plug and an LED bulb to test it real fast.