Yes, and you will need to read and understand a wiring diagram too. Lucky for you, the Oldman Honda page has a nice wiring diagram for CB750k1 that you can simplify to see only what you are after.
http://oldmanhonda.com/MC/MC.htmlAll that said, I don't know what the thing is. It looks like a button contact, maybe a wire was soldered to the back.
Left or right side switch?
A picture of the bike and switches might also be helpful.