Anti-theft deterrents?
#1
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Anti-theft deterrents?
I've been reading a fair amount about this subject and I'm having some trouble settling on a strategy. The miata is a fairly trivial car to break into and steal. There don't seem to be many threads on the topic either.
After removing the PO's alarm system it dawned on me how easy it would have been for a mildly skilled thief to disable the system by chopping all it's wires and bypassing the ignition relay.
Expecting prevention against entry as a primary deterrent is unrealistic and I'm not really considering tow counters because they are kind of impractical -- Line lock had some potential. Or boots/chains... eh.
Some of the better ideas seem to be:
1. Kill switches/dissablers/immobilizers
Car Alarms, Security and Convenience
How to install a car alarm - DIY, Self install car theft security - Honda / Acura
-fuel pump
-ignition
-starter
-main relay
2. QR steering wheel possibly with lock
3. Removing various fuses/relays, ecu, unplugging the battery while you park
4. some kind of tracking -post theft
5. alarm systems -- I'm hesitant on this because I see primarily ignition switch disables and engine bay sirens used, and in my eyes they are virtually useless because no one pays attention to a car sirens. I could see the merit in a cabin siren but it shouldn't take long to hack that away either unless you get crazy with secondary power sources like a battery. A two way pager is pretty much the only saving grace, but that won't stop them from driving away.
Ravelco's seem as if they could be simple yet affective
There is no way to make your car an impenetrable fortress, it comes down to making it more trouble than it's worth to steal.
Eventually I'd like to put in a push start and probably remove the steering lock and turnkey switch altogether. So some kind of anti-theft will be mandatory. In dreamland I thought about going completely keyless. a Passive Keyless Entry System that senses an rfid tag in range hooked up to door lock actuators which would completely disconnect the locks from the handles/keyholes and weld them shut possibly w/ some backing- cant punch a hole and easily pull the lock. have to break a window (hard top). The push start wouldn't work unless the rfid tag was in range but the system would only be as strong as it's disables which I'm still working out...
After removing the PO's alarm system it dawned on me how easy it would have been for a mildly skilled thief to disable the system by chopping all it's wires and bypassing the ignition relay.
Expecting prevention against entry as a primary deterrent is unrealistic and I'm not really considering tow counters because they are kind of impractical -- Line lock had some potential. Or boots/chains... eh.
Some of the better ideas seem to be:
1. Kill switches/dissablers/immobilizers
Car Alarms, Security and Convenience
How to install a car alarm - DIY, Self install car theft security - Honda / Acura
-fuel pump
-ignition
-starter
-main relay
2. QR steering wheel possibly with lock
3. Removing various fuses/relays, ecu, unplugging the battery while you park
4. some kind of tracking -post theft
5. alarm systems -- I'm hesitant on this because I see primarily ignition switch disables and engine bay sirens used, and in my eyes they are virtually useless because no one pays attention to a car sirens. I could see the merit in a cabin siren but it shouldn't take long to hack that away either unless you get crazy with secondary power sources like a battery. A two way pager is pretty much the only saving grace, but that won't stop them from driving away.
Ravelco's seem as if they could be simple yet affective
There is no way to make your car an impenetrable fortress, it comes down to making it more trouble than it's worth to steal.
Eventually I'd like to put in a push start and probably remove the steering lock and turnkey switch altogether. So some kind of anti-theft will be mandatory. In dreamland I thought about going completely keyless. a Passive Keyless Entry System that senses an rfid tag in range hooked up to door lock actuators which would completely disconnect the locks from the handles/keyholes and weld them shut possibly w/ some backing- cant punch a hole and easily pull the lock. have to break a window (hard top). The push start wouldn't work unless the rfid tag was in range but the system would only be as strong as it's disables which I'm still working out...
#3
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I put a steering wheel club on my daily. Plus the tinted windows, what they can't see, they won't take.
On the miata, if they even manage to get it started, i'd probably hear it. But, we've had 3 garage break in's in the last few months on my block. I'm thinking about putting a fuel pump switch in. Seems like it would be easy to do, and easy to hide.
On the miata, if they even manage to get it started, i'd probably hear it. But, we've had 3 garage break in's in the last few months on my block. I'm thinking about putting a fuel pump switch in. Seems like it would be easy to do, and easy to hide.
#5
FWIW: If they really want the car, they'll put it on a flatbed in the middle of the night.
I leave my car unlocked. If they're dead set on stealing my cassette-adapter, 0.99 cent tire pressure gauge, or my paperback copy of "One Flew Over The Cuckoo's Nest; go right ahead. Better they open up the door rather than slashing my new top or breaking out a window.
If I was really determined, I'd make a kill switch. But a standard shift car with manual steering is a decent theft deterrent. How many thief's are gay enough to steal a 20yo mazda?
EDIT: Plus, I own (literally) nothing anyone would want. The following are my greatest assets:
Laptop with broken battery that only works if constantly plugged in (less than 1 second without a plug means shutdown)
36inch color TV, the big *** boxy kind that are the size of a small-block.
A set of Mitchell repair handbooks for imports that only go up to the 80's.
3 sets of OEM Miata 14 wheels, all with less than new tires.
One set of beat-*** 15inch honda wheels from a 92 accord I'm painting to make into winter wheels in a few years.
The Miata is the only thing anyone in their right mind would want to steal. Personally, I'd be more worried about vandalism, but as I have no garage, there's nothing I can do.
I leave my car unlocked. If they're dead set on stealing my cassette-adapter, 0.99 cent tire pressure gauge, or my paperback copy of "One Flew Over The Cuckoo's Nest; go right ahead. Better they open up the door rather than slashing my new top or breaking out a window.
If I was really determined, I'd make a kill switch. But a standard shift car with manual steering is a decent theft deterrent. How many thief's are gay enough to steal a 20yo mazda?
EDIT: Plus, I own (literally) nothing anyone would want. The following are my greatest assets:
Laptop with broken battery that only works if constantly plugged in (less than 1 second without a plug means shutdown)
36inch color TV, the big *** boxy kind that are the size of a small-block.
A set of Mitchell repair handbooks for imports that only go up to the 80's.
3 sets of OEM Miata 14 wheels, all with less than new tires.
One set of beat-*** 15inch honda wheels from a 92 accord I'm painting to make into winter wheels in a few years.
The Miata is the only thing anyone in their right mind would want to steal. Personally, I'd be more worried about vandalism, but as I have no garage, there's nothing I can do.
#6
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If a thief is unable to steal a car there is a good chance they will resort to vandalism, but god dammit I want to make it one hell of an experience for them -- even if I'm left with some tattered piece of metal afterwards. I will try to make it less about getting back at the thief and more about getting them to move on though.
If it's an option, making your car look less desirable or unassuming (stock) is a good idea
The problem with a simple centralized control unit is that everything comes back to it and relays are on/off. A network of communicating or isolated control units could be made harder to defeat because actual commands have to be sent over the lines. Rotating encryption furthers that difficulty. If one were to have multiple arduinos, one for every disable for example the system would have the potential to be more difficult to defeat. The fun/cool part of a control unit is you can use virtually any type of security "switch" to disable it: Keypad, rfid, tx/rx, bluetooth, sms, magnetic stripe, biometrics, digital key. The list goes on.
The disadvantage is complexity and increased points of failure--along with finding power for the control unit/s. Standard switches are simple and last a long time. You could potentially use reed (magnetic), toggle, passive push switch relays, Combo switches for a single disable, Switches already built into the car. I'm certain there are others.
one could use protected and not easily identified black wiring (see ravelco) for important circuits.
If you've got a megasquirt you could load non-functioning profiles...
A good security system should be:
- layered
- easy and practical to enable (potentially passive)
- very difficult defeat
- easy for the owner to disable
- Obscure and well hidden
- (ideally/realistically) relatively simple
I think it would be a good idea to compile a more extended list of some potential system disables despite what people say about posting ideas to the internet where everyone can see them. I feel that well designed open security is better than moderate private security. We don't have to discuss kill switch locations because those are kind of like private keys. What are the necessary electrical systems that are required to run that can be disabled safely, easily, and remotely?
obvious disables are:
-ignition switch
-starter
-fuel pump
some others:
-clutch switch
-various fuses
-battery/main relay
-coilpack/ignitor relay
-alternator
-ecu disable (I'm sure there are multiple variations to this)
Last edited by frostyllama; 03-28-2013 at 03:48 PM.
#9
Dude.
A properly installed FP switch will not be able to be defeated by a thief /unless he knows of it's existence/
Stop overcomplicating this ****, which you are doing substantially. It's a very simple solution, and a properly hidden FP switch is even used in places in Puerto Rico with insane car theft rates.
A properly installed FP switch will not be able to be defeated by a thief /unless he knows of it's existence/
Stop overcomplicating this ****, which you are doing substantially. It's a very simple solution, and a properly hidden FP switch is even used in places in Puerto Rico with insane car theft rates.
#10
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Dude.
A properly installed FP switch will not be able to be defeated by a thief /unless he knows of it's existence/
Stop overcomplicating this ****, which you are doing substantially. It's a very simple solution, and a properly hidden FP switch is even used in places in Puerto Rico with insane car theft rates.
A properly installed FP switch will not be able to be defeated by a thief /unless he knows of it's existence/
Stop overcomplicating this ****, which you are doing substantially. It's a very simple solution, and a properly hidden FP switch is even used in places in Puerto Rico with insane car theft rates.
#20
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Everybody seems to think Fuel pump disable is a safe bet so I'll stick my money in that.
Last edited by frostyllama; 03-28-2013 at 06:32 PM.