I had trouble recently trying to track down someone who would fit an immobiliser to my bike. Apparently you need a "licenced alarm fitter" if you want to claim a discount on your insurance.
I stumbled across T&K Security who are located in Kellyville in the northwest of Sydney but are mobile and will come to you. He had a few problems and took longer that he expected but only charged me for an hour and when the unit had a manufacturers fault, he returned to rewire the new one and offered to do it for free but I insisted he take something for his trouble.
Guys like this are hard to find as are companies that care about customer service. If you need Tony, call him on -0418211250.