Jump to content

How-To: GMT900 Auxiliary Battery Installation.


parshal

Recommended Posts

i am planning on doing this to my truck to support my slide in camper.

the part number 13525970-terminal connectors seems not to show up at the dealer or on the gm parts website. what are these connecters?

 

could i save money by making the battery cables myself? It looks like they may have special ends on them, are they just lug ends or are they special?

 

thanks.

Link to comment
Share on other sites

  • 4 months later...

This might be a dumb question, but I don't know much about wiring, so here goes:

 

Why can't you just hook up the two batteries in basic parallel?

ie: run two cables, one from Battery A + to Battery B + and the second from Battery A - to Battery B -

 

Please explain.

Link to comment
Share on other sites

  • 1 month later...

Went back and reread the first post, it does add an isolating circuit for startup but that's about it. I would almost rather go this route...

 

http://bluesea.com/products/7650

 

With a set of custom cables from here:

 

http://shop.genuinedealz.com/Marine%20Grade%20Wire/

 

And you are done for less than $150 bucks with the added feature of the batteries being completely separate but still being charged. If your primary goes on you, a quick flick of a switch and you are paralleled and on the fresh batt.

 

I know its not the factory look, but just throwing out another option.

 

-Svence

Link to comment
Share on other sites

  • 7 months later...

Thanks for ask the info posted; it was a great help getting my dual batteries wired up.

one question: my aux battery connects to the system via the solenoid when key on, which is fine for most. I want mine to connect when the pickup starts. I could just put in switch, but I would rather not if I can find 12v in the run only position.

 

Anyone done this? Or am I going to get out the test light?

Link to comment
Share on other sites

  • 1 month later...
  • 1 month later...

One question I have is: does the truck lose power durning the instalation process? It looks like it does. So are there any problems with connection the power to the truck once it has been without power? Are there any steps to do when reconnecting power after a loss of connection from the battery?

 

Great write up BTW!!!

 

Thanks!

Link to comment
Share on other sites

  • 4 weeks later...

The orange wire in the plastic relay is a run only power source. That connects to B4 on the X2 connector.

 

I just bought all my stuff from a dealer. I'm not sure where the best parts source is.

 

I can't remember if the truck loses power or not but there was no special process to reconnecting power.

Link to comment
Share on other sites

  • 2 years later...
  • 5 years later...

I know this is a dead thread from YEARS ago, but I'm looking into adding a 2nd battery to my 2012 Suburban.  As technology changes, cars don't keep up!  I have several AUX loads that I want to keep powered with key off, but I don't want to drain my Optima starting battery (Damned RedTops don't like long term draws like USB chargers and the Stereo with key off) during park, and park and start short cycling (my wife drives 3 minutes to the kids school, then listens to the radio while charging her phone).  I want to run the entire truck off a deep cycle battery, while keeping my starting battery isolated from parasitic draws.  I'm basically hoping to stick the main battery wire running from the starting battery to the fuse block onto a feed from the AUX battery to run everything with key off from the AUX, but I'm having a hard time finding info on how to run the truck from the AUX battery.  I don't want to run the truck from the starting battery and a trailer or audio amp from the AUX battery, which is what these systems seem to be geared toward.  Maybe I'm over thinking this mess and should just hook a deep cycle battery to the Trailer post on the Fuse block and run a 7 foot ground back to the main battery ground post?  I'm worried about the computer being angry about voltages if it's drawing from the AUX.

 

It looks like the TP2 kit feeds specific additional loads directly from the AUX, not the typical key off loads that I"m trying to offload from the starting battery.  Help?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    245.8k
    Total Topics
    2.6m
    Total Posts
  • Member Statistics

    333,236
    Total Members
    8,960
    Most Online
    Lightning123
    Newest Member
    Lightning123
    Joined
  • Who's Online   5 Members, 0 Anonymous, 784 Guests (See full list)



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.