I installed a Crime Gaurd 745i er what ever the most expensive on is that Crutchfield sells and lately after arming the system approx. 30 sec to a minute the alarm will start going off, ill stand in my garage and watch it, when I check the status indicator light it indicates that a door was triggerd. The dome light does not stay on to trigger an electric current sensor or anything. Any ideas?? it sucks to have an alarm and cant use it.

 

Most likely just tapped the wrong door trigger wire.