Want to fit an alarm, worried about battery drain

[badfelafel]

Hi - me again!
I'm thinking about fitting an immobiliser or an alarm to the car
Any reason why not...? eg will the alarm be too much of a drain?
The car has an alternator and i think the battery is good - but is there any reason I haven;t thought of that I shouldnt fit an alarm??
Thanks
Barry

[lowedb]

A good alarm or immobiliser properly fitted will not cause much of a drain. So long as the battery is in good condition, and it's being charged well, it should be no problem at all.