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Factory Alarm System Upgrades

3094 Views 6 Replies 3 Participants Last post by  baller95
I have a 2005, DeVille DTS that just suffered a break in. The thieves smashed the driver-side window and did all the work from there. The never opened the door, and the alarm never went off. I would like to add a proximity and/or glass breakage sensor to the factory alarm. I really don't want to go aftermarket on the alarm unless it is a direct plug-in like the radio interfaces. Does anyone know the pinout and location of the factory alarm module? I'm an electrician and could easily design a circuit to add additional modules.

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Everyone who's got their car broken into, do you live in USA or Canada? All other countries accepted to reply !
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