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.
You basically just reverse the charger's leads, attaching the positive lead to the `ground side' (chassis) and the negative lead to the negative connection on the battery. I'm assuming of course that you're referring to a British made automobile.
red is positive on a negative ground system
The Suburban has a negative ground system.
I doubt it but I am not 100% sure. It is unlikely in 1983 BMW was using a positive ground system. You can easily find out. Trace the negative battery cable and see where it goes. It is is attached to ground then it is a negative ground system.
The negative lead of the battery charger can be connected to either the battery negative terminal/post, the alternator case, or a known good engine or chassis ground. Note, if the lead is placed on a painted surface, high resistance will occur and the system will not charge.
you take a car battery charger and out the negative on the antna and positive to the body and turn it 0n
I connect a spare battery to the system with jumper wires, positive to an accessory post on the vehicle and the ground to a good engine ground. Keep in mind the vehicles positive battery cable will be hot even after the vehicles battery is removed.
In a negative ground system, hook the vehicle ground (frame) to the negative of the first battery, positive of that battery to negative of second battery and the positive of the second battery back to vehicle positive. ( starter or starter solenoid) If you are hooking 2 12 volt batteries in series you will have 24 volts.
Remove any wiring from batteries, connect positive post of one battery to the negative post on the other battery. You now have a 12 volt battery system. Connect your charger to to unused positive and negative posts and they will charge as a 12 volt battery. Need more help contact me through my board and I will try to help
Remove any wiring from batteries, connect positive post of one battery to the negative post on the other battery. You now have a 12 volt battery system. Connect your charger to to unused positive and negative posts and they will charge as a 12 volt battery. Need more help contact me through my board and I will try to help.
No, the ground cable gets always disconnected first and connected last, regardless of ground polarity.
The first thing you need to know is if the truck is still the original six volt system or not. The charger is still hooked pos to pos, neg to neg regardless of whether it is pos or neg ground. Do not use a twelve volt charger on a six volt battery.