attach the neg to neg and pos to pos. this will keep 12v but increase the amps
Assuming the truck has a 12 volt system, connect the batteries in parallel, that is positive to positive and negative to negative.
Connect the 12V winch to one battery, assuming the 24V system has two batteries, connected in series.
you only need two 12 volt batteries to make 24 volt. connect them in series
Yes, connect them in Parallel. You will still have 12 volts but the amperage will double which is fine.
Connect them in series.
Connect two 6 volt batteries in series. Connect the other two 6 volt batteries in series. Now connect those 2 pairs you have together in parallel. You will end up with 12 volts.
connect the 2 six-volt batteries together one terminal each positive to negitive, this will make a 12-volt combination, then you can connect the jumper cables, one side to the 12-volt battery and one side to the two 6-volt terminals, + & -
You need to keep the batteries in parallel. The positive poles of the battery are to be connected together. Also the negative poles need to be connected together. This will maintain the voltage at 12 volts and also give you double the endurance when discharging the batteries when connected to a load.
amps
Connect 2 of the 6 volt batteries in parallel and then connect the other 2 in parallel. Now connect those 2 pair in series to each other. You will now have a total of 12 volts with four 6 volt batteries connected in parallel/series. Click the link.
If you have two 6 volt batteries you can take a jumper wire and connect the negative post on one battery to the positive post on the other battery then connect the remaining pos and neg posts to the 12 volt battery charger.
You will have a 12 Volt source with double the charge capacity.