Big 3

[mr.gaf 10+ year member]

Has anyone here ever done the Big Three Upgrade on a '99 Dodge Durango? I looked at the wiring and everything yesterday and it's a bit confusing to me.

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[gckless 5,000+ posts]

It shouldn't be confusing. As long as you know where your battery posts are, where your alternator is, and where the engine ground is you will have no problems. The engine ground would probably be the only one that might be hard to locate. If you want to post pics here, I'm sure someone could point out where you want to run cables.

 

[mr.gaf 10+ year member]

Well the thing is my battery has two wires running from the positive and two from the negative and on both the wires are spliced together

 

[NASTY08IMPALA 5,000+ posts]

dont worry about the factory wiring just add the extra 3 wires..very simple

 

[rebelfromva 10+ year member]

I think the big 3 is over rated personally. It helps but my lights still dim

 

[mr.gaf 10+ year member]

Oh so I can just add the new wires and leave the old ones rather than replace them? Had no idea