Re: PO-15 Kill Switch Wiring

[Mumbles]

The third wire is so you can connect the plug either way. It wasn’t polarized as they are today with one large and one small terminal. Your two wire circuit in the first diagram should work and that’s exactly what I’ll be doing in the spring.

Why not jump both terminals inside the male and female ends so it won’t be critical which way they are connected if you are using the original style plugs and a separate ground wire?