This is one of those parts that really should be a new item. Think about it....any used switch is going to be 12 to 17 years old and already breaking down. This switch has a bearing on so many things...nothing against Woody at all....just start right with something like this.
Nothing wrong with buying used if the person selling it knows what they're dealing with. You can usually feel the difference in a good or bad one. New $162, used from me $50. It's also a pretty simple process to replace one. I agree that there are parts that are best bought new but the headlight switch isn't one of them. It's a mute point from me right now as I've taken a break from selling parts and I don't believe I have any good ones anyway.