KILL SWITCH, die time?

I want to hook up a kill switch to my fuel pump. How long would it take to starve off the fuel and die? 1995 Ford 5.0 fuel injected. I am deciding between a kill switch to either the ignition or the fuel pump. Any info would be welcome! :smile:

If you kill the pump, it may run a couple of seconds before it dies. I would kill the fuel over the ignition. The fuel could flood the engine if the ignition is dead.

thanks for the info! Have you hear of a fake kill switch to horn?; 1 minute run time That is my next project. I will order a TDR and if I can get if to work, I will post it.