Which Kill Switch?

[TStiles]

I could really use some help on which Kill Switch to buy. I'm building an ITA Miata and am not sure if I need a "Single Pole" or Multi-Pole" Switch. Can someone please enlighten me as to what the differences are and which one I need to purchase? Is more "Poles" better or just more confusion and nonsense?

Since your building a miata , buy this book :

http://www.advanced-autosports.com/i...99587380794c86

Yeah , It's a Spec Miata book , just be aware of the SM vs. ITA rules differences.

Best $ 20.00 you can spend