Re: Went for a Long Ride, Next Day ... No Spark
On another note, what configuration of voltage regulator do you have?
If you are running an external reg'd alternator, aka, 10DN, this might be the problem as an ext VR could introduce voltage spikes into the electrical system and these spikes may be the culprit to the module.
Remember, internal reg'd, read electronic regulated alts, came out just before electronic ignitions. So spiking events would have never shown up. Module problems then were related to shorted coils, due to overheat, and overheated modules.
However, doesn't mean you can't fix it. Install a 10-amp 17 volt Zener diode, cathode stud mount to rad support, on the red supply wire, say at the horn relay buss bar, and spikes would be smoothed out.
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