What happens if I disconnect the negative battery terminal?
What happens if I disconnect the negative battery terminal? By removing the negative battery cable you are disconnecting the battery from the chassis of your vehicle. If you begin to remove the positive side before the negative and your wrench would make contact with any part of the vehicle, then you could cause a short in the system. Why are negative battery cable removed first? The main reason for disconnecting the negative terminal on a car battery first is that the whole of the car body is linked to that negative terminal. Disconnecting it first removes all the possibility of...