i have a cobra 6019/2 alram/immobiliser fitted to my williams 3 and i have been asked by my insurance company to get proof that i have a thatcham category 2 alarm/immobiliser. can anyone tell me what category mine is??? and if its a category 1 what i should do? do i need a new alarm??? also whats the difference between category 1 and 2???? and i take it category 2 is better than 1???????