Um, sorry to say but you probably had a really shitty alarm. I can unlock my key door on my car with my own key, but the moment I pull the door handle, the alarm goes off. The moment my hood opens or my trunk opens, the alarm goes off. My trunk lock is shaved and a plate is riveted onto where the lock was, and you can't get my amps out of my car without two wrenches and at least 5 minutes of unscrewing large bolts for the rear strut tower bar, with you practically sitting inside the trunk trying to get to them.
2005 Pontiac Bonneville GXP - For Sale ----- 1995 Buick Regal GS(X) - L67 madness
2000 Buick Regal GSE - Stock...for now
----- 1987 Jaguar XJ-* V12 - 12>8