I have several schemes but they are neither simple nor I have tried them. They are articles of Italian electronic magazine.
Tony, Hello: a platinum lasts between 12 and 20,000 km and a condenser up to 60,000 km. It is only a matter of keeping them clean and regulating the light from time to time, more durable !, what, what ?, until the appearance of the electronic ignitions, several hundred million cars walked excellent, now, applying a more modern system in your car, is another thing, and will bring you your own problems, disappearing the previous uses and customs. luck
is that the platinos are old now and they change one for another and the truth is no life with them tiwenden to fail already
I made the circuits and I did not succeed. The one that worked for me was one that managed to extract the diagram of one in operation, I modified it to my liking and I did it and I work perfectly without so many high consumption resistances all of 0.25w normal if some colleague you need I can publish it or send it
thanks to everyone