When I was growing up, Dad had an electric cut-out installed on his cars. It would allow the car to be started, and run for about 30 seconds, then it killed the ignition. Slow blow fuse or something like that. I don't know how it'd work with todays computerized vehicles tho.
That train horn was a great idea!!!
I wired my ignition coil through the dash light dimmer switch...turn down the rheostat..no primary power.
