Negative pole first: Whole car (except a few parts like the positive pole) are connected. Any mistake with the other lead will lead to a short. If you mess up by touching the car with the other lead nothing will happen.
What happens when you connect car battery positive to negative terminal?
Connecting the positive terminal of each battery to the negative terminal of the other battery will result in a huge surge of electrical current between the two batteries. The heat can melt internal and external battery parts, while the pressure from the hydrogen gas can crack the battery casing.
What color are negative and positive wires?
The coloring is as follows: Positive - The wire for the positive current is red. Negative - The wire for the negative current is black. Ground - The ground wire (if present) will be white or grey.
Which battery terminal do you connect first when jumping?
positive cables Safety First: Remember, when connecting the positive cables to the batteries, you should always start by connecting the dead battery first. If you feed energy into the cables before they are connected to your battery, you can cause a safety hazard.
What Colour is positive and negative on a battery charger?
There are also positive and negative cables in the jumper cable set. The red one is positive (+), the black one is negative (-). Never connect the red cable to the negative battery terminal or a vehicle with a dead battery.