I don't have access to an oscilloscope but have basic knowledge of how steppers work and a logical mind so this is what I am doing.
To isolate the paired wires (coils) I am bridging wires, two at a time, and spinning the motor by hand. When i feel the pulsed resistance, i know I have a coil.
Using this method I will end up with the four pairs.
Since the wires are color coded, I can, probably, deduce left and right pairs by picking the solids, and calling them right, and the stripes and calling them left.
So, I have four pairs, two left and two right.
When I bridge the two solid pairs, I have a smooth resistance. When I bridge the two striped pairs, I have smooth resistance.
So, to match the left and right I am using the same method.
First I bridge two solid wires. I have stepped resistance. If I add in pair of striped wires, bridged, I will either still have a stepped resistance or I will have a smooth resistance. If the pairs match then it's stepped resistance.
Using this method I have the paired coils.
I hooked these up in bipolar series last night and had a very smooth motor but the direction wasn't reliable. This tells me one set of coils was backwards. Just one though.
I now have a diagram written out that will help me tonight. It was too late last night to keep working on it or I would have had it ironed out then.
Stay tuned.