I shielded my strat body when I did a SSS to HSH swap on it. I made a thread about it here before I even really started playing electric guitar believe it or not.
It is a totally cool and fun project. And I learned a good bit about guitar electronic and how they differe from pedal building. I think you probobly already know more now than I did back when I did that project. Have that multi-meter handy. 