Well I wondered if it was possible to use one switch for coil selection and a second for the combination . . . . turns out is is possible with 2 3 pole switches, one 3 pole 3 throw for coil selection (A, both, B) and one 3 pole 4 throw for selecting the combination (serial, parallel, serial out of phase, parallel out of phase).
I haven't tested this but the connections 'work' I believe:
The only 'mistake' I have to solve is the fact that coil B hangs loose (is not grounded) when coil A is selected. The only 'fix I've found is to use a 4 pole 3 throw switch there instead and use that 4th pole solely to connect B to ground in the UP position.
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