It seems apparent to me that the wires coming from the ignition module are prone to breaking due to the fact that they have no proper support and so move around. During wiring up the engine bay on the 'Rat I decided to address this problem and manufactured a small clamp to hold the cable at the dizzy end. It simply consists of two suitably bent pieces of metal, a small piece of rubber hose and a nut, bolt, and some washers. It was really easy to make and solves the problem. I thought it might be something people with this kind of dizzy might be interested in implementing so I've taken a picture. If anyone wants clearer pictures or dimensions just let me know.
same happened to my first Sisley but was able to source a used unit easilly at the time, it's not so easy now 
