I checked my picture archive but found none of the wiring on the 1959 Model 100 that I once owned.
That said, I would think that the wiring would be similar to that for any one-pickup two-control Riceknbacker (e.g., Model 1000, Model 4000, Model 420), except with no toggle switch.
http://www.rickenbacker.com/pdfs/19506.pdfIIRC, the toggle switch is like a "tone shunt", but I'm not an electronics expert by any means.