Oh, I think I figured it out. I'm using a 3-way toggle switch that would only work for the Disk ][ floppy. The directions indicate an on/off button, I'm assuming with only two leads instead of 3. I'm gonna run to the electronics surplus store and grab both an on/off button and a 2-way toggle. Try it with the on/off button first, then install the toggle so it looks cooler.

Edit: Or not. Hmm.