Check voltage as you may have used all that was left in battery. Possible causes is voltage regulator on alt or a dead alt. I recommend you PM Andrew as he's the man who is a electronic Jimmi Hendrix and about all I'm good for is how make a crater in the parking lot.

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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course