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"the breaker box can cool faster than the copper in the harness. A few cycles of this and you could be doing more damage. Best to keep the juice off this circuit and work with the ohmmeter until you think you have the short cleared."
Yes, this is true. I should have added a caveat and suggested using a low amperage breaker so the conductor doesn't overheat. I also suggest not doing this on any circuit that contains sensitve electronics (e.g. audio, alarm, ECU, etc.).
Sherwood Lee
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