Wahoo! It works. I ordered this switch ($3.99) and this female connector ($4.95).

I also ordered one of these switches, and I may use it to set up a rear LED one of these days.

Yeah, it can be frustrating, but I built it, and it works. One thing I love about bike commuting is the self reliance. I'm responsible for my equipment and I can (usually) fix it. Now, I can even build some of it.

As I've noted elsewhere, I'm a klutz when it comes to repairing things, but since I started bike commuting, I've gotten better (OK, less bad) at other repairs, especially around the house.