You can send it back to Mallory and they will check it. I doubt the under hood temps in that spot are high enough to kill the box. I'd look for a loose ground or something while you're at it.
Cool I forgot about that I will send it in and see what they say. In the meantime I'll try isolating the wiring and check for shorts or bad connections. I added a kill switch inline with the "ignition-ON" circuit and I have a feeling the problem is with that.
412 Stroker with this box to test spark usually I just pop the signal connection to the distributor and listen for a spark in the distributor cap when I repeatedly touch the connectors together. Didn't hear anything so I popped the coil plug wire and watched for spark going to an engine ground... nothing. I doubt this is a fuel issue as it didn't sputter or act like it was running out of gas the engine just quit instantly with no warning and I already verified there is no spark.
