Hi Marje
there is a comp called "Tracker" 01895 234567, the car i have has one of their chips fitted within my car, as of now it's not activated as the person that had the car did not renew the fees when he sold the car to me, I contacted the Tracker dep & asked for a renewal fee, 30 + 125 P/Y, I contacted my insurance comp & asked what reduction will there be for this to be activated?? NIL needless to say I did not renew, so to your Question, ask your OH to find out what discount he will get to get one fitted.