I have a coil shorting out on the SOC and need to replace it. No-one has a listing for the part - I've phoned a couple of local motor factors to check. My plan was to grab a coil of the right size from the shelf at Halfords, but this coil doesn't have a voltage rating on it, and it's labelled a Bosch 'TCI' coil. Does anyone know anything about coils on TCI ignition systems? - a quick google reveals that many bikes use such a system. I'm wondering if my plan is sound, or if I'll just blow the TCI module.