Bedlam
07-10-2003, 12:20 PM
Here are some great links for starter kill circuits...the circuit I chose to use for my car..uses a combination of a few of these..read on! :)
http://www.mr2.com/TEXT/IgnitionKillSwitch.html
http://www.bfranker.badz28.com/fbody/starterkill.htm
The first site demonstrates the use of a magnetic reed switch to make the circuit function. The 2nd site..performs a mod that activates the circuit when you hold up a certain "button" in your car. Unfortunately, the sites lack the nice circuit diagrams I had on the 3rd site that really explains it all. Needless to say, I think a circuit like this is a really good idea.
Investing $5 in parts..and 30 mins of your time could save your car. Believe me..I had mine stolen last october..you dont want to go through that.
So I'm hijacking most of their information here..such that I feel obligated to give credit to the site which posted it. Here is the original URL for the article..
http://www.the12volt.com/relays/page2.asp
Anyway, this is the circuit I built...with one minor change however, which makes the whole thing really damn cool.
http://members.wcox.com/bedlam/pasivestarterkill.gif
This is a stand alone starter kill. It does not rely on an alarm or keyless entry for it to work, only a simple momentary contact switch (normally open) to deactivate it. Every time the ignition is turned off, continuity is broken on the starter feed wire. To disable (or start), turn ignition on, then press the hidden switch, then start as normal.
If you look at that picture, they show a momentary contact switch that you would need to press to trigger the whole thing. I figured that a smarter theif would prolly be looking for a switch of some sort anyway, so I decided to combine the idea from the first URL I posted...which involves using a magnetic switch in the circuit, with this one..and make it totally stealth.
So I got a magnetic switch from Radio Shack..the magnet will trigger the circuit from @ 1" away. You shove the little circuit somewhere behind your dash, and just put the magnetic switch back behind the dash somewhere sneaky. When you want to start your car..you turn the key to "acc" run the magnet close to where your switch is...and then you can start the car anytime you are ready..because its a clamping-type circuit. (meaning it stays closed, as long as it keeps power)
There are always other options for this circuit however..you could use ANY button in your car to trigger it, add your own, use the headlight switch, hazzard button, one of the window controls..whatever. Its just really damn cool.
Maybe, car theft isnt bad where you guys are at..but I had a honda civic before the Evo..and it got stolen. It cost me a LOT of money..so I recommend going a little crazy protecting these cars. They are damn expensive anyway..wouldnt you like to keep it?
Currently, my car has an Alpine alarm with pager system, lojack early warning, a starter kill switch, the factory computer chip key, and a very defensive owner with a shotgun. I dont worry about my car so much these days..nobody messes with it.
-Bedlam
http://www.mr2.com/TEXT/IgnitionKillSwitch.html
http://www.bfranker.badz28.com/fbody/starterkill.htm
The first site demonstrates the use of a magnetic reed switch to make the circuit function. The 2nd site..performs a mod that activates the circuit when you hold up a certain "button" in your car. Unfortunately, the sites lack the nice circuit diagrams I had on the 3rd site that really explains it all. Needless to say, I think a circuit like this is a really good idea.
Investing $5 in parts..and 30 mins of your time could save your car. Believe me..I had mine stolen last october..you dont want to go through that.
So I'm hijacking most of their information here..such that I feel obligated to give credit to the site which posted it. Here is the original URL for the article..
http://www.the12volt.com/relays/page2.asp
Anyway, this is the circuit I built...with one minor change however, which makes the whole thing really damn cool.
http://members.wcox.com/bedlam/pasivestarterkill.gif
This is a stand alone starter kill. It does not rely on an alarm or keyless entry for it to work, only a simple momentary contact switch (normally open) to deactivate it. Every time the ignition is turned off, continuity is broken on the starter feed wire. To disable (or start), turn ignition on, then press the hidden switch, then start as normal.
If you look at that picture, they show a momentary contact switch that you would need to press to trigger the whole thing. I figured that a smarter theif would prolly be looking for a switch of some sort anyway, so I decided to combine the idea from the first URL I posted...which involves using a magnetic switch in the circuit, with this one..and make it totally stealth.
So I got a magnetic switch from Radio Shack..the magnet will trigger the circuit from @ 1" away. You shove the little circuit somewhere behind your dash, and just put the magnetic switch back behind the dash somewhere sneaky. When you want to start your car..you turn the key to "acc" run the magnet close to where your switch is...and then you can start the car anytime you are ready..because its a clamping-type circuit. (meaning it stays closed, as long as it keeps power)
There are always other options for this circuit however..you could use ANY button in your car to trigger it, add your own, use the headlight switch, hazzard button, one of the window controls..whatever. Its just really damn cool.
Maybe, car theft isnt bad where you guys are at..but I had a honda civic before the Evo..and it got stolen. It cost me a LOT of money..so I recommend going a little crazy protecting these cars. They are damn expensive anyway..wouldnt you like to keep it?
Currently, my car has an Alpine alarm with pager system, lojack early warning, a starter kill switch, the factory computer chip key, and a very defensive owner with a shotgun. I dont worry about my car so much these days..nobody messes with it.
-Bedlam