When replacing a battery which battery cable do you remove first?
When disconnecting the cables from the old battery, disconnect the negative first, then the positive. Connect the new battery in the reverse order, positive then negative.” When you are replacing your car battery, It isn’t always easy to remember the order in which to disconnect and reconnect the terminals.
Why is it necessary to disconnect the negative battery cable before connecting the battery?
Important: The cable which is connected to the negative terminal must be disconnected first. This prevents a short circuit between the positive terminal and ground.
What happens when you disconnect the negative battery cable first?
The negative () cable is the ground cable; it is always connected to the frame or body metal and can safely be disconnected first with no chance of causing sparks. By the same token, always reconnect the positive cable before connecting the negative cable.
What happens if you switch car battery terminals?
When the jumper cables are incorrectly connected, the polarity of the electrical system on the vehicle with the dead battery will be reversed for a few seconds. This can irreparably damage many of the sensitive electronic components that are common on today’s vehicles, such as on-board computers and electronic sensors.
What happens if you switch battery terminals?
Connecting them the wrong way may cause damage onto the battery you want to charge. For one, this causes a reverse in the polarity of the car battery. it might even cause the battery to explode in some cases.
How do you replace a battery cable?
Place the other end of the cable on the positive (+) post on the second battery, tighten with a wrench. Connect one cable end to the negative (-) post of the second battery and tighten with a wrench. Place the other end with the eyelet on the negative (-) cable end bolt on the first battery and replace the nut.
When connecting battery which terminal first?
The positive terminal should be connected first when installing a new car battery to a car. If you connect the negative terminal first, the car’s entire frame becomes grounded together with the nuts and bolts of the frame.
What is a car battery cable?
Battery cable usually refers to automotive battery cable and refers to the large gauge (thicker) wires used in automotives, from small cars to tractors and freight trucks. Typically, battery cable is used to supply power from the battery to the starter engine or as a connection to ground (i.e. the car frame).