Newb here. Im thinking of getting a rear battery in my tahoe. I've done the big 3 in 1/0.Some people tell me to run the positive wire from front batt. Others say run it from from my alt to rear batt. For grounding some say go from negative on front batt to negative on rear batt. Some say ground to the chassis. Some say get an isolator and relay. What am I really suppose to do and do I really need an isolater and relay. What do they do

it should be something like this front bat----fuse----------------------fuse----rear bat----ground

----- = 0g. wire

Edited June 14, 200916 yr by dtcharneski

it should be something like this front bat----fuse----------------------fuse----rear bat----ground

----- = 0g. wire

Pretty much summed it up.

Should have used the search feature. I made this thread (literally the same title) about 2 pages back.

So how did u do it