the second battery is only useful if youre playing with the car off. and for the price of two yellow tops and isolator, he could have a new alternator, and be sure to cover the problem

 

ill just go ahead n get a new alternator. how many amps should i be looking for?

 

does upgrading the power wire from the alt to the battery really make that much of a difference

I had a yellow top in my old explorer with a 1500.1 hifonics amp and 400 watt 2 chan hifonics amp and it ran great. The only thing is at nite there was a slight headlight dim when the bass hit full blast, other than that I had no probs

 

It depends on the car. I've seen cars with 10 guage wire from the alternator and a battery the size of a lawn tractors from factory...that's obviously not going to cut it if you're running a 500+ watt amp with 4 guage wiring.

 

well I am about to run a red top (cant afford a yellow this time around). Stock wiring from alt to batt looks around 8 guage with thick strands, not really flexable. What do you reccomend?

 

I'd go with 4 guage from your battery to your alternator, and also your battery ground to your chassis. It's usually a good idea to run atleast the same guage as your amp's wire.

 

yeah I run 2 seperate 4 guage wires for each of my amps. Looks like I am upgrading my alt to batt wire also, thanks

 

I have 4 guage from my alt to battery, I wanted to go 0 but I didnt have a terminal with 2 0 in/out.

 

i mean how many amprage should a upgraded alternator put out?

 

Ill be getting a 200 Amp from Can Am Motors on Florida Ave in tampa, once i get $400ish. Nobody makes one for my car but theyll make one in kit form for almost any car.