Ford Superduty battery and charging issue
Yesterday, I had my small utility trailer on the hitch of my 2003 F-250. I had dropped the trailer off and then put it back on the ball. Since it was near nightfall, I checked for running lights on th...
Forum Discussion
My basic test was start the motor up, then disconnect the negative side of the battery. Does it still run? Alternator is good, could be the voltage regulator. Does the motor die? Alternator is probably bad, test for output voltage and amperage, as well as voltage regulator.
