Explain to me what the big 3 upgrade is and how to

 

here ya go
Let me google that for you

 

Thanks man

 

Here's a good link for you, without the cliché memes: Big Three (Big 3) Upgrade How-To | Chevrolet S-10 Forum - The Largest Chevy S-Series enthusiast site : s10forum.com

If you don't plan on adding any electronics or electrical components to the existing system, there's no real need for it.

 

I have 8 extra 100 watt lights and plan on a winch and a stereo system

 

Yep, then you'll definitely want to do it. In the article, they went with 4AWG, I know some people prefer 0AWG (which seems a bit excessive to me). I went with 2AWG to do mine with (I haven't done mine yet, but I haven't added on any electronics yet, either), just because it's what's used on the trucks and equipment I work on.

 

I went with 4awg and it solved most of my drainage issues. But there is a point at which you will need a bigger alt. No getting around it.

 

This, I went with 4awg as well. but like you said, eventually will want to upgrade the alt.