SUPERSTOCKRACER is the blue mopar voltage regulator you're talking about in this post like the pic I've posted here? I've got an MSD Digital 6A ignition box that's been installed on a '69 Charger Daytona with a 440 since 3/2012. The last two summers I've had a series of mysterious instances of either not restarting (no spark, not even a burp) and/or quitting and not restarting. I've checked things like ignition switch wiring, bulkhead connectors, distributor pick up wires and such for bad connections/grounds but have not found anything suspect. I've also traded out coils and have not been able to duplicate the issue. I'm getting 12.8 volts, give or take, at the battery on idle. Then, I came across your post and, what I also recall as reading that these MSD boxes like voltage, and that low voltage can cause intermittent issues with them (I thought I'd speak with MSD tech support about this also). I also get a lot of vehicle light dimming at idle and I'm thinking this voltage regulator could be my problem. I would appreciate your thoughts. Thinking of making the swap to the electronic voltage regulator that
@daredevil mentions in his post. I have this regulator on another '69 Charger with the same MSD box since 2011 and no issues. Thanks much in advance.
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