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Use a multimeter/multitester to check and see if there is voltage and current. Or if you really want lay a screwdriver across the red and black wires... just kidding please don't do that. Put the black lead of the multimeter to ground (the chassis) and the red to the wire and you should get a reading. They offer cheap them cheap online, the multitesters are the cheap ones, and usually you just touch it to the wire to get a voltage reading.

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16y ago

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