stock HD tp2 dual battery install help

[diesel1114]

hey guys how are you i am very intersted in installing the stock gm HD series tp2 option code dual battery setup in my 05 yukon, i have seen this done on the 1500 series trucks that didnt origionally have dual battery;s, has anyone here done it ? and there is a funky looking box that is attached to teh negative battery cable , i ran the part # which was 15137027 it came up as a control module - energy storage , what does that thing exacly do ?

any help is greatly appreciated

john nyc

 

[chauncey0337]

Here's a write up on a dual battery setup but it's not the stock hd tp2.
http://tahoeyukonforum.com/forum/showthread.php?t=562&highlight=dual+battery

 

[WoldD90]

I used a WranglerNW dual battery set up and it works great.

 

[diesel1114]

that look slike anice kit can you guys out there please post pics of the installations ? weather it be stock or aftermarket ?

all the help is greatly appreciated