Battery Or Alternator?? Help

[james704 10+ year member]

I'm getting mixed advice, information, and everything else. I have a kicker class d 400.1 mono amplifier, with 2 kicker cvr 10's. and i have it hooked up to a 1 farad capacitor(rockford fosgate). and my headlights still dim!! also when i crank my music up loud my head unit(facotry) will skip sometimes. but it also skips sometimes when i dont have it cranked up to the top.

I went to auto zone today, to run a test on my alternator, so the guy checked the battery and said the battery was good, and if thats good the alternator is as well. i told him i have a stereo system and he checked my battery's amperage. he told me that my battery puts out 675 amps or amperage and that i should get a better battery that puts out more amperage like 800 or so. so should i do that??

i have a 2004 suzuki forenza.

by the way, i cant do the big 3. wish i could.

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[revrider1 5,000+ posts]

You should be ok with only 400watts, check all your grounds...

 

[Lakota 5,000+ posts]

x2 on checking connections. Make sure all of your grounds are bare metal and that all connections are good. I once had voltage problems and it turned out that my battery terminal wasn't staying tight on my battery. You really shouldn't have to do much upgrading if you're only running 400w.

 

[miker 5,000+ posts]

Just to let you know, he made two threads... I would go to the one in the wiring section... It's getting more hits than this one.