Question: How to find a bad wire in a car.

  Options: 
 A. Locate the radiator its metal box, run your hands through the wires with the car off and gently wiggle them, if you see a spark its possibly grounded to metal and a bad wire.
 B. Locate the ECU its plastic box, run your hands through the wires with the car off and gently wiggle them, if you see a spark its possibly grounded to metal and a bad wire.
Answer: B