Big 3 upgrade.

[Kapox]

Hello KJers, I'm new here, so, hi to all of you.

I'm wondering if any of you have made the "Big 3 Upgrade" on your KJ. That's the one that you replace your alternator and ground cables, for a better and thicker other cables.

I'm doing some research to do it myself and I have the basics, but It'd be more helpfull if any of you have done it before and can tell me any tip or something I need to keep in mind while I do the upgrade.

Many thanks to who can give me a hand here.

 

[tommudd]

So whats this " Big 3 " suppose to do

 

[renegade 04]

The only reason you would need to do this mod is if you have a huge drain on your battery and electrical system.

 

[uss2defiant]

Apparently the "big 3" is this
http://www.amazon.com/dp/B00OYGD5FS

 

[LibertyTC]

^ Oh that is good to know Cause when I think of "Big 3" and Jeeps it means:
Big Lift- Big Tires & Big Dollars Spent !!" :icon_lol:

 

[MarkJ]

Sounds like a boondoggle. I would think the alternator already has a cable that provides for it's rated output. Now grounds I can see, but only in the area of power usage.

 

[profdlp]

Here I was thinking Roosevelt, Churchill and Stalin.

 

[twowings]

Ah...."Yalta Conference Memories"....

 

[tommudd]

If you look at the cables around the battery they have a lot of wire running to them and are factory only wiring harness. I wouldn't want to start cutting and changing any of those, see no real need to.
I knew what the big 3 was, just wanting to see why and the reasoning behind it

 

[ktmrider]

Yea the cables are not easily replaced by a straight cable. Mine were not in great shape and I looked at replacing them and ended up crimping on new ends.

 

[eradicator006]

Usually when doing "the big 3" you don't replace cables; you add on. The grounds are the most important. If you're not upgrading your alternator, replacing the alternator wire isn't going to benefit much if any at all.

 

[tommudd]

So back to the OP original question/ remark
You can't upgrade the alternator
can't replace cables , yeah so maybe add to them but why?
Not really going to gain anything are you?

 

[ktmrider]

I would like to add a second battery and isolator to run an inverter wo effecting the start battery. But there is just no good place to put it. I have that system on my van that I race out off and its really nice. Even with that system I have no problems with the stock cables.

 

[MarkJ]

Yea the cables are not easily replaced by a straight cable. Mine were not in great shape and I looked at replacing them and ended up crimping on new ends.

Rather than replace or add cables I would augment the crimp (I hate crimps) by soldering.