starter kill switch

[kentop@ix.netcom.com (Ken Bertschy)]

O.K. back to real Triumph related stuff. I want to install a simple starter
kill switch. Nothing fancy. I know those coils generate between 20,000 and
40,000 volts. So, exactly what do I need to hook up the switch, what kind
of switch, and how do I hook it up without doing permanent damage to my
Spitfire. Please help an electrically challenged Spit owner.