Re: Power Window Master Switch
If it's a test light then you just put your clamp on the positive battery terminal, then if you touch a good ground the light comes on.
For a multimeter set it to check resistance and connect one end to ground and the other to the pin. If you have 0 resistance then you have a good ground as it is saying you have good continuity. Some multimeters also have a continuity mode (usually had a diode symbol) this will usually give a beep if there is continuity.
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Automotive Electronics Engineer
2000 XLT 2.5L A/T
Mods:
Explorer OHC
Explorer Autodim Mirrors w/ Autolamps
Explorer Sport White Face Gauges
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