I want to wire 3 coils and a switch (either a 2 position DPDT switch or a push-pull pot), such that 2 coils are active at any one time, and one coil is always in the circuit. For example, take three coils, Coil 1, Coil 2, and Coil 3. With the switch in position 1, Coil 1 and Coil 2 are in parallel. In position 2, Coil 1 and Coil 3 are in parallel. Would either of these schematics work?