It involves changing out the POS & NEG cables. from the alternator to the battery, and the engine GROUND with a larger/thicker (lower Gage number) power cables/wire.
This will improve the electrical system, of the car, if you want to add power hungry upgrades (like an high power aftermarket amplifier or off road lights)
Thanks for the response.
Adding thicker wires won't actually improve anything if the current wires (pun intended) can already handle the current delivery capability of the alternator to where the loads are. If the existing cables are undersized for the load 'and' the current delivery capability of the alternator then an upgrade would be warranted, otherwise it's a waste of money and effort. In addition, it's the entire circuit to the load(s) that need to be accommodated regarding current carrying capability which is more than just the power/ground of the battery and alternator and engine ground.
Unless someone does the math, including the alternator capability. load points, and intermediate wiring, it sounds like an exercise in futility. But maybe you've already done that. Did you change out the alternator for a higher capacity unit?