A dropping resistor will pass full voltage when not under load (Points open). This means that the meter is not a substantial load and the resistor effectively passes full volts. If the points are closed, there will be no voltage applied at all. The resistor, measured with an ohm meter, will measure around 2 to 3 ohms. A 12v coil for a resistor system will state (on box or printed on the side) for use with an external resistor. When no resistor is used, a 12v coil will indicate no external resistor required (it is wound with more and finer wire to operate in 14 volts). Jim
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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