My 98 civic came with an after market alarm system accept it works like a stock alarm i think. It only goes off if the door is locked and then unlocked withought the button. Also the siren alarm thing is in the inside of the car and you can barly hear it when u are outside. The key has 3 buttons 1 unlockes the door the other just makes the lights go on and off and i have no idea of what the other one does. So i was thinking since i didnt buy this alarm system maybe its just on a different setting and it might have like a shock sensor or something. Is it possible to change the settings on an alarm sysem if so where would i find the part to tune?