Alternatively, a tech may choose to de-energize the circuit and use an ohmmeter to check for a path between the two points as is often done to test a fuse ... source of the short without blowing a ...

A little short ... test unit that can be plugged into vehicle wiring harnesses, 40 wires at a time, to check for the nearly invisible insulation breaks that can cause intermittent short circuits ...

Why does my car’s wiring system ... recommended wiring diagrams and use of poor quality wire harnesses with defective wire sizes and insulation can cause harmful short circuits or fire out ...