: hood ornament and factory alarm system?



Adrian12
08-25-11, 03:50 AM
hi guys

in our city in europe they always steal my hood and trunk emblem on my 81 cadillac.

now i thaught about to put a switch to the hood emblem (on the bottom to the spring of the ornament) to the horns, but this will be a too short sound if someone comes with a tool for cutting the steel wire of the emblem.

i thaught about to put the switch to the factory alarm system. if somebody tries to open one door horn sounds and lights are blinking.

what wire or where could i put the switch onto? i don't know exactly how the system works on the door for example. what kind of voltage or what must be on the wire?

thanks for all your help

its annoying and expensive always put new ornaments on the car...

ths

Stingroo
08-25-11, 08:23 AM
Now there's a clever idea. Not sure what wire you'd tap into, but someone here is bound to know.

sven914
08-25-11, 11:38 AM
On the Theft Deterrent Controller (mounted to the brake pedal), there should be a light blue wire coming out of one of the connectors. That wire goes to all of the door jamb and door lock tamper switches. You can tap into that wire and bring a lead to the front of the car. Put a pressure switch under the hood ornament and connect it to the lead. When the hood ornament is moved off the base, the Theft Deterrent system will register it as an open door.

pompste
08-25-11, 05:11 PM
There is a video at youtube.com that shows exactly what you need.It shows a Cadillac that has the hood ornament hooked up to horns and everytime someone trys to mess with it the horns blare loud.
If i can find the link again,i`ll post it here.

Adrian12
08-26-11, 04:58 AM
On the Theft Deterrent Controller (mounted to the brake pedal), there should be a light blue wire coming out of one of the connectors. That wire goes to all of the door jamb and door lock tamper switches. You can tap into that wire and bring a lead to the front of the car. Put a pressure switch under the hood ornament and connect it to the lead. When the hood ornament is moved off the base, the Theft Deterrent system will register it as an open door.

this is the perfect answer.

i've already a wire from hood ornament to underdash driver side (i had the horn with a switch), but didn't know what wire at the deterrent box...

two questions:
what must the switch be or what position must it have with emblem in normal position (i think opend) on pulling the emblem it closes contact!?
the switch, so the light blue wire must be grounded???

thanks a lot for your help :)

sven914
08-26-11, 02:23 PM
Right the switch needs to be usually open, and then ground when weight is taken off (that's how the door jamb switches work). So the blue wire is just looking for a ground connection and you don't need to worry about running voltage anywhere.

MoistCabbage
08-26-11, 08:07 PM
Just electrify the ornament. Someone tries to steal it...FRY EM!!!!!!!:shocked:

CADforce69
08-27-11, 07:23 AM
Just electrify the ornament. Someone tries to steal it...FRY EM!!!!!!!:shocked: I support this proposal. Itīs a didactic way to inculcate the importance of private property.

pompste
08-27-11, 08:13 AM
I support this proposal. Itīs a didactic way to inculcate the importance of private property.

Didactic and inculcate-----interesting! Now i have to google those words since i don`t have a clue what they mean--ha ha!

CADforce69
08-27-11, 08:52 AM
Didactic and inculcate-----interesting! Now i have to google those words since i don`t have a clue what they mean--ha ha!
I just tried to say in a cultivate way: Yeah! Sent to hospital those fu**ing thieves! :lol:

Adrian12
08-28-11, 09:25 AM
hi thanks a lot again :D i'll work this out next weekend...

i had the idea to put whol car under voltage, only when alarm is turning on :P a normal car ignition coil should be enough voltage :D :D :D

then i'd like to put a kind of mobile phone in the car, so when alarm is coming on my mobile phone rings :P

but this is all just an idea for now..

adrian

CADforce69
08-28-11, 12:59 PM
I vote for ignition coil connected to body... Though maybe your battery would suffer the consequences too. :D

Adrian12
08-29-11, 02:38 AM
I vote for ignition coil connected to body... Though maybe your battery would suffer the consequences too. :D



battery? why?

electrical components go from battery +12v to battery (chassis) ground.

ignition coil + voltage on the chassis goes nowhere until somebody touches. so if someone touches the car while alarm is running (and so ignition coil is working) voltage goes to the earth through humans body (this high voltage doesn't go through electrical components)

should be right!?

adrian

CADforce69
08-29-11, 06:31 AM
Iīm not an expert in electricity. Just thinking many electric shots could discharge battery but I think it would happen in isolated cases and just for some seconds... But -on the other hand- maybe someone would report you for such an extreme car protection system... And where I live, you would be condemned (No sense of private property protection here :helpless:)

sven914
08-29-11, 03:19 PM
You could get a precharged, high voltage capacitor and wire it into the alarm system. I don't know if you want to charge the entire car though; if you send power through the chassis grounds, you could fry all of the electronics, especially the horns, lights, and theft deterrent module.

You could, however, put the capacitor under the hood ornament and when someone moved it off the base, it would be like getting hit with a stun gun.

To get the car to call you when the alarm is going off, you would need to get an auto dialer and find someway of getting it run on battery voltage and receive a signal from the theft deterrent. Most of the auto dialers I've seen need to be connected to a hardline, but I'm sure you could get a cellar one.

Adrian12
08-30-11, 03:35 AM
You could get a precharged, high voltage capacitor and wire it into the alarm system. I don't know if you want to charge the entire car though; if you send power through the chassis grounds, you could fry all of the electronics, especially the horns, lights, and theft deterrent module.

You could, however, put the capacitor under the hood ornament and when someone moved it off the base, it would be like getting hit with a stun gun.

To get the car to call you when the alarm is going off, you would need to get an auto dialer and find someway of getting it run on battery voltage and receive a signal from the theft deterrent. Most of the auto dialers I've seen need to be connected to a hardline, but I'm sure you could get a cellar one.

hi sven :)

i don't understand how i should damage electronics.

it's a second system, from chassis to earth (floor where people stay)
the other system is the car system from battery + to battery -

the next question is, how strong is a car ignition coil for an electrical shock? too hard?
and how could this be wired to the chassis? started with a relais coming from theft deterrent module (thats not the problem to activate the coil)
but where should the wires of the ignition coil go???

sven914
08-31-11, 12:28 AM
Everything in the car is grounded to the chassis. The battery is also grounded to the chassis, which completes the circuit and allows the flow of elections from battery positive back to the negative side. There are no wires that physically connect the ground side of the electronics to the the negative terminal.

If you charged the chassis, that voltage would back feed into everything connected to the chassis. Electronics do not like being powered though the ground side, and it can cause a lot of internal damage.

MoistCabbage
08-31-11, 12:44 AM
how strong is a car ignition coil for an electrical shock? too hard?
and how could this be wired to the chassis? started with a relais coming from theft deterrent module

Adrian, I do hope you're not actually considering electrifying the car as a theft deterrent.

cadillac kevin
08-31-11, 09:05 AM
^its illegal (or at the least not advisable) to electrify your car because if someone gets hurt, you're liable for their injuries. its a lawsuit waiting to happen.

sven914
08-31-11, 11:25 AM
Right. If your going to go to that extreme, you might as well park you car in a puddle of water and run a broken extension cord out to it. This way nobody come near your car until you cut the power.

Cadillacboy
08-31-11, 04:08 PM
May be you could write off a warning about your installation to disclaim yourself from a lawsuit against you if anyone gets hurt from touching your emblem but dunno for sure if still it works for you . Well, I believe a retracting hood emblem would be more than great

The-Dullahan
08-31-11, 04:20 PM
I Florida, you can electrify your something, so long as you have a proper Government warning on it. It's the same as wet floor signs. If you put down a wet floor and fifteen people proceed to break their necks in the puddle you were warning them about, you or your business is not liable.

As for installing an alarm, take two washers with inner grommets, put them onto the base spring on the ornament in affixed position so they encircle it entirely, only a fraction of an inch apart. This will give a full 360 degree radius around the spring. Now, make it a circuit by adding a wire to each washer, thereby meaning that if your ornament is jarred in any direction, the circuit is complete as the washers make contact and the current is bridged to the alarm. The entire setup is basically universal and incredibly simple. Personally, my ornament is connected to the steel of my car by a series of bolts, so I have no use for something like that, but I imagine that if I DID have a spring base ornament, that is what it would have.

MoistCabbage
08-31-11, 05:13 PM
Right. If your going to go to that extreme, you might as well park you car in a puddle of water and run a broken extension cord out to it. This way nobody come near your car until you cut the power.

Hmmmmm, electrified moat theft deterrent system. Have to give that one a try.

In all seriousness though Adrian, electrifying any part of the car is out of the question, legal or not. Even if you were to post warnings all over the car, what if a child or animal were to come in contact with it, or someone brushed by it accidentally. You were referring to connecting to the ignition coil, that would actually be lethal! Maybe you could hook the ornament up to one of those joke store gag items that just give you a little jolt, but I think your original idea of having the alarm trigger if someone tampers with it is the way to go.

sven914
08-31-11, 11:32 PM
And if you think about, anything that isn't strong enough TKO someone, is just going to piss them off, and you're going to get a crowbar through your windshield.

The-Dullahan
09-01-11, 12:03 AM
The best defense is a good offense. Tie a large, menacing dog to your bumper. Worked for my Adoptive Mum back in the Homeland.

In all seriousness, Hearses incur constant vandalism, it is in their nature (Court on Tuesday to schedule a now Felon's restitution payment of several thousand he owes me for that exact reason), but I think they make up for it by the fact that if anyone ever tried stealing them, the authorities would be all over them within a minute or two, because they kind of stand out. This is largely true with any older car as well, because they are not always easy to hide and do not blend in.

I think running it to the alarm rather than electrifying it, is definitely the way to go. If not, you could always retrofit the whole thing so it is stuck in place and unable to bend or twist or move at all where the spring base is, at which point they cannot take it without cutting it, meaning they do not want a whole one AND they will need to make sure they bring tools.