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In this case DC current and a magnetic compass are not needed, because the connections of these Dahlander motors is internal, so relative polarity of the coils cannot be reversed. When you look at a row or a column in the resistance table, the two lowest resistance wires identify the ends of the two closest coils. So for example, #7 is between #8 and #16. That process continues to fully identify the ring of six coils.
Since the two rings of six coils show no connection, we know that there could be at most, one wire shorted to the motor frame. You should check the insulation is good, from the motor frame to one wire on each of the two windings. Remember to protect the coil insulation, by earthing the motor frame.
The experiment comes when you connect power to the motor. You need a fast breaker in case there is something unexpected. Three filament lamps rated to the line voltage will limit fault currents if there is a problem. Equal lamp dimness will tell you if things are balanced. Then you can apply the full supply, without the lamps.
Since the two rings of six coils show no connection, we know that there could be at most, one wire shorted to the motor frame. You should check the insulation is good, from the motor frame to one wire on each of the two windings. Remember to protect the coil insulation, by earthing the motor frame.
The experiment comes when you connect power to the motor. You need a fast breaker in case there is something unexpected. Three filament lamps rated to the line voltage will limit fault currents if there is a problem. Equal lamp dimness will tell you if things are balanced. Then you can apply the full supply, without the lamps.