Accuspark Classic Standard 12v 3 Ohm Ignition Coil Non Ballast BB MGB MG Midget Accuspark Hardcore Ballast Resin high output sports Ignition System 12V Sports Coil Dlb105 Electronic Ignition Coil High MGB AccuSpark Blue 12V Ballast Sports Ignition Coil eBay Products Watford Classic Cars Sports Coil 12V Genuine UK Manufactured.. Red Non Ballast = for MGB upto 1974 and all MG Midget 998 , 1098 ans 1275 Models Blue Ballast = for MGB 1974 onwards, MG Midget 1500cc and all V8 Minimum 25% increase over standard coils40,000 Volts potential outputSolid resin core No leaking of old coolant oilImproved heat management Better suitaed to extream enviorements Mounts in any orentation Suitable for points and aftermarket electronic ignitions Available in both ballast and non ballast