Car Relay Question - Momentary Button Activates Second Switch, Deactivates Itself Until Second Switch Activated??

Daniel.is.here said:

plenty of instances where a warm car was preferable to that of a cold one, and leaving the car on was the only option to achieve that.

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1979 Ford Granada (I think that was the year) - - - I added a hot wire system to it. You started it - engaged the hot wire (relays) - turned the key off and removed it, which effectively locked the steering wheel and shifter - engine still running. If someone got into the locked car and stepped on the brake pedal the engine shut down. Only if you had the key in the ignish and in the RUN position would the engine keep running despite the use of the brake pedal. Upon re-entering the car and inserting and turning the key, the moment you stepped on the brake pedal the system shut down but the engine kept running and you could drive the car. Should the brake light switch fail there was a fail safe button to shut the system off. Yes, a warm car is nice to get into. But there's another solution to that - plugging in an electric heater that warms the engine so that when you start the car you only have a few moments of cold to deal with because the engine was warm and could provide heat. Plus warm oil flowed better through the bowels of the engine thus protecting it from "Cold Start-Up's".

Daniel.is.here said:

I watched with amusement delight as someone who had asked to borrow my car sat there in the driveway, shouting to me that something was wrong as they hit the brake pedal and jerked the shifter without success.

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Bought a used car. Test drove it before buying. Everything seemed fine. Got home and accidentally bumped the shifter into reverse as I was going up the driveway. Turned out that the shift lock, the one that locks the shifter in place, had been broken by someone who forced it to move. Had to replace the shifter to prevent accidentally bumping the shifter while driving. THAT shift lock system was controlled by a cable, not a relay or solenoid.

Today I drive a Tacoma. One day I wanted to move it without having to start it. There was no way to shift to neutral (button-engine start system). So I YouTubed it. There's a tiny slot just above the shifter. A small screwdriver pressed into the slot would unlock the shifter. Should you have a dead battery or no other way to move the shifter out of park a small screw diver would do the trick. I suspect thieves know about that little slot.

"MY" anti-theft device would be a removable gas pedal. Where's a thief going to go at an engine idle?