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Message: [QUOTE="bruce, post: 1079469, member: 1351"] The two leads of the multimeter measure potential difference. A simple way to describe a voltage drop is to put the multimeter on Volts DC and touch the leads to the battery termial (either one) and the clamp around it. If everything is tight and clean (free of corrosion) the voltmeter should read 0vdc because there is no difference in voltage between the 2. If corrosion was present or the battery clamp was loose you might see a .5-1.5 voltage drop or more. Now move on from the clamp to the solenoid, Live circuits, everything intact just like it sits. If everything if correct (free of corrosion) the gauge should always read 0vdc to show that no voltage is lost. This test is better because you can use it on live circuits. To measure resistance you would need to pull the cables off and isolate them from the rest of the circuit. [/QUOTE]

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