Westone Rainbow II wiring diagram

This wiring diagram is taken from my 1983 Rainbow II, it should also work with the Prestige 150 and 250 as they have the same controls (3 way switch, 2 volume and 2 PEQ tone controls). The volume pots are 500K log/audio, capacitors C1 and C2 are 0.022 microfarad Mylar. The PEQ tone pots were specially made for, and patented by, Matsumoku. They are not a standard part and there is no commercially available equivalent today.

  1. these earth/shield cables are soldered to the body of the pickup selector switch
  2. for clarity these wires are shown as blue on the diagram, on the guitar they are white