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Hi Guys, I have searched thr forum to try and find out if any of you guys have upgraded your factory alarm sirens to a VERY LOUD siren to scare thieves off, if so how did you connect it as it looks like the existing siren does not give off a neg of pos output when the alarm is triggered, I have searched and asearched to no avail, hope one of you guys has already done it!?!
 

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i have 2 dei sirens on my car and with the hood closed its not that loud. the best way is to invevest in 2 way paging. or gps tracking. more money but worth it
 
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