When something is wired “in parallel” it means it is wired alongside a circuit with its own positive wire. Now that we have a basic idea of electrical theory, let’s examine how it is all wired together. The example below illustrates wiring for an engine that uses battery ignition and a stator charging system.
Pressure: Is the resistance to flow normally created by a load. This is expressed as Pounds per square inch or PSIFlow: This is the rate of which fluid flows through a system. This is expressed as Gallons per Minute or GPMDisplacement: This is the volume of fluid.
The hydraulic system begins with the reservoir. This reservoir contains the oil used in the system. Oil is delivered from the reservoir to the hydraulic pump. From there the oil flows to the hydraulic control valve. Once activated, the valve will allow oil to flow to and from the hydraulic cylinder. At the same time, oil is moved from the cylinder back to the reservoir where the cycle repeats.
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.