Do you connect the positive or negative first on a car?
First, remove the negative cable, then the positive cable.The positive end of the battery should be connected first.Attach black, remove red, and remove black.
Do you connect the car battery terminal first?If you want to reduce the risk of sparks which can make the car battery explode, you should remove the negative battery terminal first.The nut that holds the terminal should be loosened once the negative terminal has been found.
By removing the negative battery cable, you are taking the battery out of the vehicle.You could cause a short in the system if you begin to remove the positive side before the negative side.
When you are done with the work on your vehicle, you will need to remove the negative battery terminal.You need to work around a battery if you want to remove a negative battery terminal.If proper safety precautions are not taken, batteries can cause injury.