i purchased this for my girlfriend for christmas and now by reading some of the alarms to stay away from now i wish i hadnt. ne ways i opened it up and didnt come with no remotes, so i guess my question is if this makes sense. is this a stand alone unit or is this like an add on unit and thats why it didnt come with remotes.

also is there ne place i can go to get a diagram to install this, ive been to 12 volt and they only went up to like 2000. i need it for a 2004 dodge stratus se.