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OK, how about this then ? They all work the same way regardless of the physical position of the transformer. Any chance you could takes some pics so we can see what's going on ?
Anyhoo - if you can determine which of those 3 wires is common to the field coil and transformer, you should have about 1330 ohms between that and one wire (field coil) and 712 ohms on the other (audio transformer). Make sure the set is off and the caps are discharged before you check that. Now that you've got it powering up, there could be 100s of volts across those caps.
Speaking of that, have you tried measuring the voltage going to that speaker's field coil or across the 10MFD cap ?
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