Hello All I have recently designed an alarm system for my GSXR1000. It costed me about in parts. It senses the bike tilt position (two planes) and the bikes battery voltage (for when robber disconnects alarm system, or starts bike up). Here is the full web page article on it for those interested. [URL]http://jsno.leal.com.au/proj_micro/gixxer_alarm.html[/URL] It's basically just a prototype to test out the basic ideas. When I go to revise this, I'm thinking about adding mobile phone support (so that it can ring you), and making it much more energy efficient and compact. Nb/ I can be contacted on netrider for any comments and interest. Cheers. fred