Any alarm siren that is mounted under the hood is not effective unless you lock down the hood..perfect example..how many times do you hear an alarm go on..then it shuts down in a few seconds..you say to yourself..must be someone elses car..back in new york..2 guys break into a car..1 opens the hood as the alarm is going on..other opens the hood..finds the siren..rips the wires..closes the
hood and walks away..come back in a few minutes and have all night to steal it....alarm goes on as nd off..by that time..you never even got out of bed...hood locks the siren out..too bad no one makes Chapman locks anymore