Adding 2nd Battery wiring ???

[getonerd]

Im going adding a 2nd battery i have the tray i poped off the fused panel and saw two studs do anybody know what the nut washer on them i havent tested them to see if work

not mine its a random pic



i want to have two wet batterys up front and a yellow top in the back

 

[DallasTahoe]

Well there are two ways to do it, wire the batteries direct to each other or use an isolator. I have two batteries but only my main one is hooked up, the other is only for emergencies


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[getonerd]

can i swap out the 30 amp fuse to any size