Before we where aloud to work oncar we had to fill out a booklet with simpel test in it to make sure we know how to backprobe without dameging the wires.The first test there was to do was to turn the multimeter on put it on ohms make sure leads not touching anythig and record the reading.The reading was OL this means open circuit.Next test was to put the meter on ohms again and touch the leads together and record the readings I got a reading of 0.4ohm.This result tells us there is a resistance of 0.4ohm in the multimeter.The next I had to do wasbackprobing wires.I was given a hard shell conector to do the test on.I used a needle and put it in gently on the one side of the wire and then on the fron of the plug and measured the resistance and got a result of 0.5ohm.I know i had a good conection because the resistor was less than one above the internal resistance.
this picture shown above I got of google but it is similar than what I have done in my testing
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