Q: How is it important to disconnect the negative battery cable when working on electrical components of a Ford Bronco II?
A: Whenever you work on any electrical component in your vehicle, it is always good to disconnect the negative (-) battery cable. This will help prevent damage to many sensitive electric parts like the ECM, radio, and alternator among others. In case you are removing a battery cable, you must start with the negative (-) cable. This will save the car from shorting ground of the positive terminal (+) to its body, causing harm to those components. When removing the cable(s), make sure that you first turn OFF the ignition. After connecting your battery cable(s), test if all your lights, windshield wipers, and other safety electrical systems are functioning well.