Right ive got two alarms on my 16v. Sigma m30 that works fine and does its job. The second is the standard reno alarm. I have lost the key that goes in the little switch thing thats under the bonnet. Think thing is a seperate key switcher that plugs into the back of the alarm. I need a whole new unit from somewhere. anyone no where i can get one from coz reno want 180 for the part and fitting. 10p for the part me thinks. Any help will be much great