Oh ya...Big 3. It's b.s. too. Voltage is typically only an issue if you're utilizing unregulated power supplies in your amplifiers and you're into "burps" or "competitions". I won't talk about that because it can become complicated. Bottom line...GOOD GROUNDINGS ARE YOUR BEST FRIEND!!! Don't listen to all the crap about "stiffening" capacitors etc. If you have an issue with dimming...upgrade your ground wires please. A good amplifier has all the capacitance it needs built into the on-board power supply.
Run 4awg back to your trunk and call it a day for your power. That way you don't ever have to deal with "upgrades". The power is already set
