Stock Electrical people

[Alpine4life89 10+ year member]

does anyone here have stock electrical who are running around 1500 RMS? If so how is your voltage holding up?

My alt is 95 amps but it seems to only want to power around 1000 or so watts before my battery starts losing voltage and amps start shutting off. It's pissing me off.

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[WOT]

Ive got 3000+ rms on my 110 amp alt

I do however have a second "cheap" underhood battery though, and the Big 3 in 2/0 thick *** copper wire

On full tilt I dont go below 12.3-.4, if I play it for 15+ min full tilt Ive seen it dip into the high 11's, but nothing thats gonna shut an amp down.

DO you not have the big 3? Your battery might not be in the best working condition

 

[Alpine4life89 10+ year member]

Ive got 3000+ rms on my 110 amp alt
I do however have a second "cheap" underhood battery though, and the Big 3 in 2/0 thick *** copper wire

On full tilt I dont go below 12.3-.4, if I play it for 15+ min full tilt Ive seen it dip into the high 11's, but nothing thats gonna shut an amp down.

DO you not have the big 3? Your battery might not be in the best working condition

my batter has been drained literally at least a dozen times since i got my car a year ago. My battery does however read 12.7v with the car off. I have no idea if it is in good working condition tbh.

I know nothing about the big 3, lol. I did put a 4 gauge ground from from the battery to the frame though. That's it.

I can't get my subs loud because every time i turn the gain up to a decent level my voltage drops below 11. And then the amps turn off. I know my amp is capable of pushing these subs alot harder, i just can't get it to work without significant voltage loss.

 

[WOT]

Search the big 3, and do it for sure, all you need to add onto your battery ground, is a ground from the engine block, and a wire from your alts + directly to your battereies +

Id suggest going to a local welding shop and picking up 1/0 welding copper wire and doing all 3 wires. Should cost you more than $35 with terminals.

Then if the voltage drops are still bad, Id say a high big reserve battery upfront is instore.

More than likely it sounds like youre gonna need to upgrade your front battery though (if you can budget $125)

 

[7ender 10+ year member]

Do the big 3....Sounds like your battery could be gone too. I was running 1100 off stock electrical + big3, and didn't even have any dimming. 80 amp alternator too...

 

[RidnClean 5,000+ posts]

im running 3k on stock alt(100?) with big stock batt(idk) and a C&D in the back.

never seen below 13.8

 

[Enellz 10+ year member]

I wouldn't run it on stock to risky. Do the big 3 and upgrade the battery.

 

[john denver 10+ year member]

1 ag1200d +1sundown sax125.2 no electrical upgrades runs fine no drop at ideal

 

[Alpine4life89 10+ year member]

rdit

 

[Alpine4life89 10+ year member]

could it just be a corroded battery terminal? Mine is pretty crappy.

 

[SocialStealth]

If you do the big 3 with 1/0g wire, what size fuse should you use?

140 amp alt

 

[Bobby322 10+ year member]

Im running 2400W with just a C&D battery in the back. Stock battery and no big 3. If im bumpin at idle my alt guage goes down alot.

 

[BeAlLsTaR13 10+ year member]

ive got stock electrical on about 1500rms, 105amp stock alt, with stock battery.. only did big three.. voltage usualy never dips down below 13.4 while driving and 12.9@ idle

If you do the big 3 with 1/0g wire, what size fuse should you use?
140 amp alt

250/300a is fine.

 

[prcwitt 10+ year member]

Im running 2000 rms with factory alt. Have a red top under the hood and 2 shuriken bt20's batteries in the trunk. And big 3, stays above 12

 

[ejschultz 10+ year member]

http://www.caraudio.com/forum/showthread.php?t=412826

That's my big 3 upgrade. Scroll down, there's pics. 1/0 wire, no fuse between alt and battery (there's no where the wire can move). I figured I'd give you an idea about how to do it. By the way, I'm pulling about 1000 rms between my 2 amps and my voltage still drops at idle (about 14.1 to 12.9). My alt is 105 amp, but i'm sure it's on it's last leg. I've got an Optima D34/78 up front, nothing in back. My voltage only drops a little, from about 14.1 to maybe 13.8 while driving.