What Terminal Goes On First Car Battery. In particular you want to connect the terminal which is not connected to the chassis metalwork of the car some older cars connect positive to the chassis in which case you should connect the negative first. Electrically it doesnt matter but there is a good reason to disconnect the ground first then the positive and when reconnecting- to connect the positive first and then the ground This is because if you disconnect the negative first and you can touch the bodywork or some ot.
Answer 1 of 5. Choosing the best battery jump starter is very important. In particular you want to connect the terminal which is not connected to the chassis metalwork of the car some older cars connect positive to the chassis in which case you should connect the negative first.
Beware of the fact that red always represents the positive terminal of a car battery.
Start by connecting the positive battery terminal. To be perfect remove the grounded terminal first usually it is the negative one unless you are working on a rare forklift or something. Next attach the negative cable to the negative terminal of the live battery. The positive terminal should be connected first when installing a new car battery to a car.
