Quote Originally Posted by I800C0LLECT View Post
Seriously? I think you need to do some reading on how these things work. Big 3 is an internet trend that's gotten out of hand. Maybe I'm wrong but I'm doubting your stereo equipment pulls enough power to necessitate a new alternator + the cables necessary to transfer that extra power. I will admit though, 10' at 8 guage won't allow a lot of amperage through.

I don't know the size on 04+ but it looked to be 8awg running to my battery too. I'm currently running 4awg to my trunk for 2 amps that can push out a max of 500watts(a/b) and 600watts(a/b). So I'm not the most efficient and even when I crank I don't think I've ever seen it dip below 13.4V on a real hot day. Yesterday driving home in 35 degree weather it didn't dip below 14.4V

Just did the big three... New battery... lights still dim. - DIY Mobile Audio

Now start calculating your needs.
WIRE


And to help others on spending...here's one on audio cables too.
the science of cables - DIY Mobile Audio
Not trying to argue with you here just trying to figure it out. My setup is 4ga wire to a 600rms class D amp, 8ga back to a 220 watt amp(I am assuming this puts out less then 100rms). Gains have been set with a DMM the right way. Listening to music lets say a little above normal I get headlight/dash light dimming.

Now yes I understand my system should not be pulling near enough to make my lights dim, so my question to you why do YOU think I am getting dimming and how would YOU fix it?
(btw Yellow Top battery also)

Thanks,
Joe