My nephew has a F-350 diesel that would drain the batteries overnight. I disconnected one battery and jump started the truck and it ran fine. I went to charge the other battery and it pegged the 10 amp charger and triggered the charger relay big time. I took it to the house and used his charger--same thing. Found out he somehow reverse charged the battery. It had also blown the alternator.
The reason he originally recharged the battery was excess current draw with the ignition off.
I took off the starter cable and measured the current draw across the electronics, auxilliary cable with a digital meter. It showed a current draw of about 3-5 amps that my 30 amp analog current meter (borrowed from tractor supplies) did not show. So I then removed each fuse and measured the current draw across each fuse socket and localized it to one minifuse and left it for him to finish tracing it to whatever relay, device was defective. I forget which one.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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