Hey Sifu, keep seeing youtube or ICE discussion talking about the big 3 upgrade.

Basically it help reduce resistance, better current flow to your amp and your system.

Isit the crucial steps for car audio?

what is big 3 upgrade? can elaborate more?

the step your should take even before changing the HU...

maybe it should be the first thing to add if you wan to have a healthy car....but if the owner are not aware about electricity can change everything, it will be BS to them if u tell them to do this before they mod any other things....

but, owner that hesitant on electrical upgrade usually ready to spend $$ for stiffening caps and big watts amp thinking that reserved power is king,,,,,hehe
i think 0awg is an overkill for a stock alternator system,,,,,highest stock alt is wat, 80-90A?

may mostly 60-80A, jap usually 80-120A, american and european usually 120-180A...so 0ga is ok...

oh good to know, i was refering to our domestic car stock system,,,,,,

0ga is actually over killed for a lot of sound system...

but most wires degrades overtime... so having a bigger tolerance to compensate on the degrading actually is better...

plus... most is only like 2m long cable... wont cost a bomb to start with... plus benefits arent just the audio... its everything that uses current in your ride benefits from it...