There's a circuit to do that to the LT side of the ignition circuit in a 20
year old '555' book that I've got somewhere ! uses a hidden switch somewhere
to de-activate it. I used to have a relay operated by the hydraulic circuit
tester button in an old Mini, this had to be held in order for the starter
motor to operate. Effective in its obscurity :)

Simon.

> -----Original Message-----
> From: D Lloyd [mailto:dan.lloyd@GB.ABB.COM]
> Sent: 25 October 2001 15:43
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [OT]: Practical car theft schemes
>
>
>
> Hi,
>
> There might be a legal issue on this one........if someone
> steals your car
> then it cuts out causing a major accident (maybe resulting in
> death), you
> will probably get someone trying to sue you for it.......daft
> though it
> sounds.
>
> Would a better solution to be have the car start but run like
> a dog (maybe
> by interfering with the electronic pickup for the ignition causing
> misfiring) thus making it pretty obvious to the thief that
> they would get
> nowhere fast? If I leave my car in a dodgy place, I usually
> swap over  a
> couple of plug leads (not many thiefs can memorise the firing
> order then be
> bothered to correct it); even if it did start it would run like a pig.
>
> Dan

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