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no spark update


Vehicle Information: Year: 1974; Body Type: Coupe;

Prior question was answered: "quick overview: turned off foglights, engine shut down like it was a kill switch. Cannot start. Local Porsche/BMW mechanic is checking out for short and what may be fried. If the orig. CD box is fried, I assume the best is to replace with rebuilt Bosch and not PermaTune or MSD?"Update: coil was bad, put on a backup and it fired and runs fine. Still searching for possible issue with foglight switch that could have shorted out the coil. Tried to replicate the initial issue but cannot. The coil was only a year old, only 1,000 miles on it. Bosch direct replacement from Pelican for my model(silver cover, orig. was black). I installed the Petronix Ignitor about a month prior to the issue and drove maybe 100 miles, are you aware if there's an issue using the stock Bosch coil with the Ignitor which may have caused a premature failure? Want to replace the coil with the right model if there is.

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