Need help for Scoprio i-500se Ignition Disable

I install the I-500se and love it, but i'm haveing difficulty on which wire to cut from the Bike ignition to install the Ignition disable unit. I "sorta" have a general idea, but it's best if i ask before actually attemptingt it. ^^;

Any help will be more then appreciated.

Tony
Ducati 748s 2000