dual battery set up

[jasong]

when installing a second battery, does the wiring go: positive to positive and negative to negative? or does it go: positive to negative and so on?

for the life of me i cannot remember how to do it so it gives me 12 volts and not 24 volts i think its positive to positive and negative to negative...

thanks in advance

[Crawdaddy]

you want to parallel it all, positive to positive, negative to negative...any other way will smoke all the electronics. However, you probably want to install a battery isolator while you're at it to keep the batteries from killing each other due to different battery age and such...

[jasong]

thats what i was thinking, thanks for the reminder
oh and the isolator is a good idea to, i had planned on getting one.