XPost: alt.autos.toyota, rec.autos.tech, alt.autos.honda   
   From: Trueno@AE86.gts   
      
   On Wed, 22 Aug 2007 09:49:00 -0500, Skenny wrote:   
      
   > Hachiroku ハチロク wrote:   
   >> On Tue, 21 Aug 2007 08:24:26 -0700, John S. wrote:   
   >>   
   >>   
   >>>>Or, a little more sophisticaed: put a switch inside the car. Now, this   
   >>>>would mean triggering the 'alarm' when getting into the car, something   
   >>>>I don't want to do at 1 AM when I'm leaving on my 'paper route'. So,   
   >>>>some kind of delay would be good. I was thinking a capacitor between   
   >>>>the hot line and the 1st relay, so the cap charges and when it reaches   
   >>>>charged it triggers the relay and starts the flasher.   
   >>>   
   >>>   
   >>>All I've read so far are questions about how the car owner would switch   
   >>>an unidentified alarm system off and on.  Since you are not buying an   
   >>>off-the-shelf alarm what kind of alarm system are you proposing.  And   
   >>>more importantly how will the alarm be triggered by a potential   
   >>>intruder.   
   >>   
   >>   
   >> All I want is something that will blow the horn, and maybe flash the   
   >> lights.   
   >>   
   >> In it's simplest form, a switch mounted somewhere outside the car that   
   >> turns the system 'on' by providing a ground path for a relay. When   
   >> someone opens a door, the relay closes, current is passed to a flasher   
   >> (like for your turn signals) and then to the horn and headlight relays.   
   >> Very simple.   
   >>   
   >> Also, this is instantaneous. As soon as they open the door, the horn   
   >> starts. There is an 'always on' current source (courtesy lights) that do   
   >> not turn off when the dome light is turned off, so I intend to use this   
   >> for the 'trigger'.   
   >>   
   >>   
   > looks to me like you have it all figured out. So why are you asking us   
   > this? You know you could give away your secret device. For instance, from   
   > this conversation thus far, if I were a crook, I would know to look under   
   > the fender of your car for a keyswitch. Then take a sharp chisel and   
   > hammer and shear the switch off, then cut the wires to the switch, then   
   > get on with business as usual. Sometimes the best intrusion device is to   
   > catch the crook offguard. I kinda like the string tied to the toe   
   > suggestion. Ive heard it works for napping while fishing too.   
      
      
   Basically, wanted to see if it was feasible. (If anyone would say, "I   
   wouldn't do that if I were you...").   
      
   I was an elec. tech for 19 years, and a geek for the past 15. I know my   
   way around a ckt or two...  ;)   
      
   As far as giving away a 'secret', if these guys even know what Usenet is,   
   I'd be surprised.   
      
   Either that, or they'd post a message like, "This is a great site!"  ;)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)