Good evening,
This is what I bought....
https://www.halfords.com/motoring/ca...er-249628.html
One end of the battery immobiliser will securely fasten to the negative terminal on the battery but the earth cable on the car is too large to securely fasten to the other end of the battery immobiliser.
I hope you understand what I am trying to say.
However I think Maninder's suggestion will cure the problem.
Thanks for your thoughts.
Regards David