Posted: Wed Apr 14, 2004 12:15 pm
The RIC website is always a good starting place for this type of question:
http://www.rickenbacker.com/pdf/19521-HB1%20Wiring.pdf
One thing the diagram doesn't mention is that the John Kay humbucker is terminated differently, essentially totally non-jumpered all the way back to a connector. The treble and bass pickups have a different pin-out so that they work with the active circuit properly.