No, the ground cable gets always disconnected first and connected last, regardless of ground polarity.
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.
Center terminal is connected to the positive from the battery. Outside is connected to ground (-).
Connect the positive clip of the charger onto the positive post of the dead battery. If the battery is located inside of a vehicle, connect the positive charger clip to a grounded surface--like an engine block--on the vehicle.
Connect jumper cables from the positive battery post, on your BMW, to the positive battery post on the charged every. Connect the ground together. Allow the battery to charge for a minimum of 10 minutes.
connect the power and acc wires together and put them on the positive and the ground to the negative
Connect the positive lead to the battery or a spare positive terminal at the fuse panel, run it to the switch with an in-line fuse, run from there to the positive terminal on the horn. Mount the horn and connect the ground wire to ground on the chassis.
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
Connect the two 12 volts batteries in Series. Battery 1 & 2. Connect the negative post (-) of battery 1 to the negative (-) ground cable. Then connect the positive (+) post of battery 1 to the negative (-) post of battery 2. Connect the positive (+) post of battery 2 to the positive (+) cable. You now have 24 volts as the batteries are wired in series.
Take the # 1 battery and connect the positive cable to the vehicle. Then connect the negative cable on # 1 battery to the positive post on battery # 2. Finally connect the negative post on battery # 2 to ground on the vehicle. You will have 12 volts but only the amperage of #1 battery.
You have to disconnect the ground wire from the block. You have to disconnect the positive wire from the starter and the alternator and the powerline going to the fuse box. and connect the new ground then the positive
You have to disconnect the ground wire from the block. You have to disconnect the positive wire from the starter and the alternator and the powerline going to the fuse box. and connect the new ground then the positive
I've found it best to connect the pos first then the negative last. If you connect the negative first there is a good chance that you might accidently ground out the positive against some part of the car.