Do you really want an alarm? Mine is a pain in the backside. Always arms itself when fuelling, once the battery in the fop thingy went and i was stuck, when it goes off nobody cares and no discount on insurance at all. Once connected you cannot just remove it anymore. After my accident the bike was with the light on and the hazzard lights were on for an hour and a half. Battery flat after that. Now the garage cannot put the alarm to sleep anymore. Need to call somebody in.
Just some points to bear in mind.

Rob