I'm putting together a switch panel for my nitrous kit and I'm wondering what kind of switches I'll need to get for the arming and bottle heater. I know I need a 12V but what would I need as far as amps go? 12V 10A or 12V 20A? Does it matter either way?

 

As long as the switches are triggering a relay it should not matter. If there is no relay they have to be able to handle the amp draw of what ever you are triggering.
Dave