Can I add a siren?
09-09-2006, 05:53 AM
#1
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Can I add a siren? My ,99 T/A factory alarm only honks it's horn...can a siren be added?Is there a better alarm out there that will work in tandem with the BCM?
09-09-2006, 04:06 PM
#2
No, you can't just add a siren because the factory alarm uses a pulsed output to honk the horn but a siren requires a continuous output. You can add a Hornet 700T alarm upgrade (made by DEI) to the stock system for about $75. It will give you a siren, a new shock sensor, and the ability to add additional sensors such as a perimeter sensor or a glass shatter sensor. With the exception of the siren and the power/ground connections, all the wires can be connected at the BCM so installation is easy. Also, it still uses your factory remote key fobs.
09-08-2020, 06:47 PM
#4
You can install a siren , it won't pulse and it won't activate when you press the horn button. In short, you place a diode on the horn output of the bcm security lead. Add a relay to convert negative output to positive.Then you use a capacitor that energizes from the pulsing signal. It will constantly be energized from the signal and will maintain a constant siren sound. I know this because I installed a setup like this on my 2000 Camaro SS. The horns still beep and the lights flash, and the siren is loud . If anyone needs specifics, reach out to me.
