The simplest kill switch is just a toggle switch hidden under the dash somewhere that shorts out the distributor primary circuit. On a HEI system, the TACH terminal gets connected to ground with the remote switch and prevents the coil from firing. A more sophisticated system might involve a timer that lets the engine run a few seconds, then shuts down the ignition system. With some basic electronic knowledge and a couple of relays, a system can be designed to blow the horn and flash the headlights after the engine stops until the battery runs down or a cable gets disconnected.
Jerry

Last edited by Hotrod Lincoln; 07/31/2010 5:11 AM.

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!