The positive
connect negative side first
no matter what vehical it is, the proper way to disconnect a battery is to disconnect the ground side first ,then the positive side to reconnect it is exactly opposite you connect positive side irst then connect ground side ground side in case your not sure is the negative side of battery
You connect the positive terminal first.
Nothing happens to the vehicle if you connect the negative side first.But is is safer to connect the positive side first. Reason If the negative side is already connected and you put the positive side on you take a chance of touching a part of the body or radiator with your wrench while tightening it, causing the positive side to ground out. If your negative side is not connected yet and you touch the wrench to the body while tighting the positive side nothing will happen. So installing the positive side first reduces the chance of shorting the battery out which could cause the battery to explode.
First off you must have the same type batteries. Connect the positive post of the first battery to the positive post of the second battery. Then connect the negative post of the first battery to the negative post of the second battery. Now connect the positive post of the first battery to the positive connection on the vehicle. Then connect the negative post of the first battery to the negative cable of the vehicle. Click the link for a diagram.
Yes connect the positive first to the positive battery post, and then connect the negative ground to the engine somewhere and not to the battery.
The man said it Always connect the positive + cable first to the battery. Then connect the negative- cable to the engine somewhere. Never connect the negative cable to the battery itself. Batteries vent hydrogen gas and which can ignite with the slightest spark. For this reason never, ever, connect the negative first and never connect the negative to the battery.
Remove battery cover and connect charger to side post battery.
Connect the negative cable first.
Use the symbols for a battery, switch and bell and connect them together with a line starting at one side of the battery. From the battery series connect the switch and bell and then a line back to the battery.
Connect them in series. With the 2 batteries sitting side by side just connect the negative terminal (-) on battery # 1 to the positive terminal (+) of battery # 2. Now connect the red hot cable to the positive terminal of battery # 1. Then connect the negative black cable to battery #2. You will have 12 volts but the amperage of only 1 battery.
Always connect the positive (RED) cable first.