Backup Alarm

Hello all need help I need to install the battery backup 520T. Is it fair that someone broke in to my car last night and they just disconnected the battery and turn off the alarm. but now, before spending all my backup system is to install the battery for more help if they try to open it again, I have a backup siren, but now you have to install it. Can anyone help? Please a really appreciated.

I would put a small sealed 12 volt battery in the console, glove box or under the seat with a fuse and switch. The wiring should be identical to the original, just move the hot wire and ground alarm anywhere on the body.

I would look in a battery for a device controlled toys, and consider making a charging lead which would be taken in the cigarette lighter.