Does anyone know if it s possible to hook my alarm to my siren so if it gets set off the siren goes off in stead of just the horn? Its a 2000 F350 and the siren is Sho-ME 31.2515
Alarm to Siren
- Thread starter SFR1986
- Start date
whatevah
Member
it'll take some work with a multimeter, but it should be possible anything from the alarm system gives a constant +12v.
http://www.able2products.com/pdfs/31_2515_4040_instructions.pdf
You'll have to splice into the data cable going from the switch box to the siren box and see how it works. I'd guess that those 4 "un-used" terminals are to manually select the siren tones, but that's only a guess. I'd try putting a very low amp +12v power to them one by one (with power to the unit) and see what happens. That's how their other undercover sirens operate.
http://www.able2products.com/pdfs/31_2515_4040_instructions.pdf
You'll have to splice into the data cable going from the switch box to the siren box and see how it works. I'd guess that those 4 "un-used" terminals are to manually select the siren tones, but that's only a guess. I'd try putting a very low amp +12v power to them one by one (with power to the unit) and see what happens. That's how their other undercover sirens operate.
or you could wire it into the dome light circuit with an adjustable delay on break timer set at say one or two minutes.
might be less expensive or atleast less risk of burning out alarm system
might be less expensive or atleast less risk of burning out alarm system
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BigDogg795
Member
911 said:
LOL, why am I suddenly imagining some skel breaking into a car and triggering the alarm and start to panic thinking "oh crap, the cops are here already?"
Cant one just tap into the activation wire on the alarm? The same wire than makes the horn honk and car lights flash because then it would be powering up whatever is hooked to it?
SFR1986 said:
just in case you haven't yet accomplished your alarm/siren hookup, here are the details from a proffesional point of view.
2 things you have to keep in mind here. 1) if your Sho-Me is hooked up to ignition (meaning that your Sho-Me does NOT work when ignition is off) then you'll need a relay that will kick the Sho-Me on when the alarm goes off. 2) what kind of signal activates your Sho-Me, is it a + pulse or a - pulse? Your alarm wire (coming from the brain, going to the noise-maker in the hood) is most likely a 12+ wire but depending on the alarm make/model, it may have an additional - wire.
Here is the deal. First off, your Sho-Me will have to be powered up when the alarm goes off. So, if your Sho-Me is anyways on 24/7 then it's not an issue but if your Sho-Me is powered up thru ignition on then you'll need a relay to power it up when the alarm goes off. 2ndly, one the Sho-me is powered up you'll need to send it a tone activation signal from the alarm to the Sho-Me. So, if the Sho-Me uses a + signal to activate the tones then you use the alarm + wire for that function. If the Sho-Me uses a - signal to activate the siren tones then (depending on the alarm's make/model) you'll be using the alarm's - wire for that function. If the Sho-Me uses a - signal and the alarm does NOT have a - output then you'll need a relay to flip the + wire from the alarm to a - signal.
If you have a basic understanding in a vehicles electrical system and the uses/functions of a relay, then the above is the most comprehensive information you can get regarding your particular project. If you need some diagrams of how to actualy make it work and/or how to wire up relays then you can email me. Don't forget to include the make and model of your alarm system.
Best
I have my Sho-me 4 function siren hooked up to my siren.
I put a relay on the alarm small speaker wires as the trigger. I have that set up for 5 years now works like a charm.
If you don't want the loud chirp everytime you lock/unlock your car put a 5-10 second time delay relay as your trigger relay .
Its a 4 wire job a piece of cake !!!
30 - 12v +
85 - ground
86 - trigger from small 12+ wire from alarm brain going to speaker
87 - siren input
I put a relay on the alarm small speaker wires as the trigger. I have that set up for 5 years now works like a charm.
If you don't want the loud chirp everytime you lock/unlock your car put a 5-10 second time delay relay as your trigger relay .
Its a 4 wire job a piece of cake !!!
30 - 12v +
85 - ground
86 - trigger from small 12+ wire from alarm brain going to speaker
87 - siren input
Harbor Patrol
Member
ive been putting my alarm through my backup siren for years, and it works!!
once a guy tried breaking into my car-put a screw driver into the side of the window, shattered the window, i saw it on CCTV from the building where my car was parked over night, and the second the alarm/100w siren went off-bec you can see the headlights blinking, the guy fled like no tomorrow! had the window replaced and nothing was taken from the car
once a guy tried breaking into my car-put a screw driver into the side of the window, shattered the window, i saw it on CCTV from the building where my car was parked over night, and the second the alarm/100w siren went off-bec you can see the headlights blinking, the guy fled like no tomorrow! had the window replaced and nothing was taken from the car
EVModules
Member
The Omega 90 has an alarm input available. Makes for a very attractive attention getting sound that's distinctively different. Just ground the input and after a delay (intentional), it will go off. It's used for high temperatures for K-9 vehicles.