how would i go about installing a backup battery to my alarm.... i know its not as simple as just running a wire from a battery in your trunk to the alarm...because it would die...it needs charged from an alternator or something...
theres a piece you hook up in line from your alternator to split off power to both batterys while not letting yoru second battery draw from you first and vice versa. not sure what its called . i'm sure wysiwyg knows, he has a battery in his trunk.
