The wiring diagram that jr_tech was very helpful in providing states that the field coil is 460 ohms. It's highly likely that the voice coil / "humbucking" coil (in series) are FAR less than 460 ohms. Only 4 wires lead out of the speaker to the chassis......
Use your Ohmmeter and find the two wires with 460 Ohms across the two (or pretty damned near it) and connect those to the proper places indicated on the schematic (one to the # 80 rectifier's cathode and one to the audio output transformer's primary center tap).
The voice coil / humbucker wires (the two with MUCH lower resistance) will go to the output transformer's secondary.....
There, see, I did your homework for ya........ Your welcome
