The 'Big 3' - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 04-03-2012
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The 'Big 3'

Hey all,

I've noticed my headlights dimming when the sub hits. I was reading and people suggest doing the big 3 over the capacitor/new battery/new alternator.

I'm just curious as to what I need to do this. I read but all I got was bigger wire.

What I've gathered is it's bigger wire to the alternator from the battery, grounding the battery to the chassis and bigger wire to the amp?
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Old 04-03-2012
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The Big three mainly consist of running bigger wires from anything that is connected to the battery.
Here is a great example of another member doing the same to his truck.

https://www.ranger-forums.com/snapshots-69/not-small-3-a-116807/
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Old 04-03-2012
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I was looking at that post earlier. I'm not sure how, but I missed the first paragraph telling us what he used lol.

Thanks.
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Old 04-03-2012
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The third thing is actually going to be your ground from the engine (alternator) to the body. but yeah, alex linked my thread above showing my install.
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Old 04-03-2012
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Well, once I get everything I need, if I run in to any problems, I'll shoot you a pm.

Thanks guys.
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Old 04-03-2012
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I was reading that post and I basically did the big 3 to. My truck but only on the second battery not the starting battery.... Ive always read the big 3 being 1. Battery. 2. The alternator 3. Wire

Well that's cool to see

The build your doing is going to be easy . It was for me
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