DIY anti theft advice

Speedy Jim wrote:
> Bluedc wrote:
>> Sorry to be a bit slow here but
>>
>> Before I start can can someone confirm that I have got this right. To
>> ground the coil I simply need an wire with a switch in it from the
>> (-) on the coil to a ground?
>>
>> Are there any dangers in this - starting a fire or damaging any parts
>> of the ignition system?
>>
>> With the ashtray trick or any other position for a switch - you need
>> to make sure that there is no chance that it will be operated
>> accidently.
>
>
> Yes, that's correct- ground the (-) side of coil.
>
> Note that there may be considerable voltage on that wire,
> maybe 50 to 100 volt spikes. The wire needs to have
> excellent insulation to avoid breakdown and resulting
> poor spark, especially when damp. Careful to avoid
> kinks in the wire or abrasion.

One note also is that this kind of kill switch is very simple to
disable. Somehow cutting off the +-voltage coming from the ignition
switch to the coil +-side would be more difficult to disable or
troubleshoot by the thief.

---
Olli

"Olli Lammi" > wrote in message
...

>
> One note also is that this kind of kill switch is very simple to
> disable. Somehow cutting off the +-voltage coming from the ignition
> switch to the coil +-side would be more difficult to disable or
> troubleshoot by the thief.
>

not really, it's not uncommon to "hotwire" the ignition system straight from
the engine compartment, but it's rare to mess with the negative side of the
coil... one thing for sure, unless they want your particular vehicle, a
hiccup like it not starting is enough to send them on to an easier
target....they usually don't take the time to troubleshoot anything, to
risky...