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Tool to trace 12v wire when it's active


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I have one of those live wire testers that works on mains voltage. If the wire is live and you take the test and touch anywhere near the wire it beeps. Does anyone know if there is anything equivalent for a car's 12V supply? I don't want to have to sleeve and expose wire to test if that is the wire I am looking for 

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You can get multimeter probes with a very sharp point that screw down and penetrate insulation with a tiny hole. A bit of tape around it afterwards to be safe.

Sent from my STV100-4 using Tapatalk

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