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Hey guys, I have a 2000 7.3 and having a problem with my batteries draining all the time and too low to start my truck after a couple days. Thought it was the starter solenoid, but replaced with a new one and still same issue. Have replaced both batteries 2 times still same issue. Started probing voltages on all posts and found out that there is 5 volts on the "S" wire of the solenoid all the time. When the key is turned over, it does go to 12v, but the batteries drain after a couple days.
Any clue as to where I should look to see where this wire would be getting 5 volts from?
Any clue as to where I should look to see where this wire would be getting 5 volts from?