[Shop-talk] Couple aftermarket car questions

[Pat Horne]

Tim,

I like the idea of an immobilizer that allows the vehicle to get out of 
the parking place, then dies. That way the thief can't take any time to 
try to find the switch and abandons the car in the middle of the street.

New cars can have the switch in series with the fuel pump power lead. 
Personally, I have a time delay fuse in series with the ignition coil 
power lead with the switch across it to bypass the fuse. Select a value 
for the fuse to allow the vehicle to start and run for 15-30 seconds 
before the fuse blows If you connect a relay coil across the fuse also, 
the contacts can be used to blow the horn until the key is turned off. 
This should make the would be thief abandon the car in short order!

Peace,
Pat

Thusly spake Tim, On 6/13/2012 3:08 PM:
> I would like to put an air horn in my truck (under the hood).
>
> I would also like to put some sort of immobilizer in the electrical
> system as an anti-theft device.
>
> Input of any variety would be greatly appreciated!
>
> Thanks!!
>
> tim
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-- 
Pat Horne, Owner, Horne Systems
(512) 797-7501 Voice		5026 FM 2001
Pat at HorneSystemsTx.com	Lockhart, TX 78644-4443
www.hornesystemstx.com
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