lol i dont know yet. i guess we will find out. ive seen guys do this with a electronic throttlebody and i hear it makes a noticable amount of difference. Something how the engine isnt proberly grounded to the frame and resistance in the TB. I am not that great at explaining things .
if it were me id slap 2 optimas in my toolbox of my bed, run a cap and call it a day.

let me also say that this forum sucks without pics, but sux even more with no info lol, let us know what you find im very interested. im not knocking your idea, you might be on to something that some of us may not have no idea of.

 

LOL Yup great tip for high demand electrical systems.

For me the high demand is my winch which is movable to the front or back of the truck.

I did the same thing on my truck, 2 Optima yellow top batteries both with 3 grounds to frame body and engine, an extra positive cable off of the alternator and 3- 1 gauge cables connecting them and run to the rear of the truck to run my winch on the hitch if needed, which uses power quick disconnects. Forgot 140amp Alt.

 

It's the big 3 upgrade. It upgrades the factory ground and positive wires to support high demanding electronics. Like a system or a winch like said. It's to maintain voltage. The factory wiring looks like 8 gauge. You can't pull 100+ amps through a single 8 gauge wire. It's not efficient.

I'm doing it because I have a high demand system.

 

Performing a "Big 3" upgrade on your vehicle is one way to improve the electrical system performance and its ability to supply power to your audio system. This upgrade will help any vehicle using an after-market amplified stereo system, and most certainly should be performed on any vehicle after a high-output alternator is installed.

Definition: the "Big Three" upgrade means improving the current capacity of three cables: 1) alternator positive to battery positive, 2) battery negative to chassis, and 3) engine ground to chassis. Some people replace the factory wiring; others add additional cables to the factory wiring.

 

Completed.

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I would have used heat shrink instead of tape for that professional look..

 

I know I know... Only thing I had in hand at the time.

 

i guess ive never seen it done that way, i just know to replace the factory wiring, with oversized wiring, and ground ike u said, nice deal tho

 

So you used 0 gauge wire? and you replaced the 3 factory wires? also in the last pic what are those wires connected too; from the alternator to the battery?

 

I didn't remove the factory wires due to some issues that could happen. I just added on. I used 0 gauge. That new picture with the fuse is the alternator to battery.