Stop in for a cup of coffee
I have seen it all on wiring on aircraft, some really stupid stuff like the white zip ties used on bundles (they rub through and black don't) to ac and dc wires in the same runs giving transient signals, and the best find ever we were having compass problems on one of the talons in a right hand turn only. Took months to find this one on the ground low and behold the wires that went to a device called a flux valve (yes seriously) it takes the magnetic field of the earth and transforms it into a signal very low dc voltage, well one of the wires was not secured properly and in a right hand turn would get near a generator wire. I was a ******* hero finding that one even Lockheed could not find the problem.