The starting circuit consists of your battery, ignition switch, starter solenoid, and starter. Your ignition switch is a rotary switch that when turned to one of its 3 positions connects and disconnects certain contact terminals located on its backside. In the “start” position, it connects the Battery, Ignition, Rectifier, Accessory, and Start Terminals.
You can determine the amount of current being used and charged on your tractor’s system by placing the meter in-series with the circuits of the tractor. To do this: first remove your red probe and plug it into the 10 amp Max port on your DMM. Then set your DMM to DC Current with the range of 10 amps. Now you unplug the wire going to your ignition switch’s “B” terminal. By clipping alligator clips to your DMM probes you can now connect one probe to the “B” terminal of your ignition switch, and your other DMM probe to the wire that normally goes to “B” terminal on the ignition switch. Now when you run your tractor the current will flow through the meter and your DMM can give you a reading. It will tell you how many amps are flowing through your system.Tagsjohn deere ignition coil problemsjohn deere x300 troubleshootingjohn deere z245 troubleshootingjohn deere l120 troubleshooting guidejohn deere lt133 electrical diagramjohn deere l108 wiring diagramjohn deere x300 wiring diagramjohn deere lx173 wiring diagramjohn deere la145john deere lt166 wiring diagram
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