How to test my alternator: SOLUTION
I have a 2003 Holiday Rambler Neptune (Diesel pusher). I just took it for a spin and the "alternator" dash light was coming on intermittently. Not sure if it's a short in the light, or if the alternat...
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Voltage while running S/B in the 14.X volt range. If it's in the mid 13's or below then there's something wrong with it and that's why the light came on.
