Windmistress broke her ignition switch. My 86 Hunter has a 2 pole setup with a push button starter. The key can be removed in the on position. Most of the switches I've seen many 3 pole, off-on-start switches, but almost no 2 polers. Can I rewire a 3 pole switch to work as a 2 pole just by ignoring the start pole? Is there a reason for the 2 pole setup? Is there a way to look at the switch to determine if the key can be removed in the on position?