That's a simple matter of which side of the ammeter you connect all the "load" wires to. Load wires such as the ignition and lights.
If they're connected to the side that runs to the battery cable, you will see alternator/generator output. If they're connected to the side that runs to the BAT post on the alternator, you will see "net charge."
One way to test is to turn the lights on with the tractor not running. If the meter does not move, it's wired for alternator output. If the meter goes negative, it's wired for net charge.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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