Major power dimming question...

[OoMesKoO 10+ year member]

Sup guys. Something doesnt seem right to me here. I have a Tahoe, stock 100A alt. and a hifonics BX1500D. Now, dimming is REDICULOUS in my truck. Like... below 12v low. I dont understand it either. I have the stock batt. and the big 3 done. But my question is, does the power wire itself have anything to do with it? Its not really high quality wire, but its also only 4 gauge. Would a run of 0/1 be a better choice to stop the dimming? I dont think i need a HO alt w/ only a bx1500d do i? Any ideas.... lemme know!

Thanks!

Bradd

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[SPLboi 10+ year member]

get a better battery

 

[kicker06 10+ year member]

A better battery is not going to do anything.

Your car runs off it's alternator when it's running, not the battery.

 

[pjvoc 10+ year member]

your right, but i doubt he needs a alt for a bx1500d

 

[pjvoc 10+ year member]

maybe another battery to keep constant flow

 

[phyphoestilic 5,000+ posts]

What did u do the big 3 with?

 

[kicker06 10+ year member]

I have a bx 1500d..

They pull a lot of current.

You will need a new alt if you have a 100amp alt.

MY 130amp stock alt gets major dimming. Even before I added my speaker amp (400wrms)

 

[seg_representin 10+ year member]

Check your connections at your battery and alternator and all the big 3 wires. I was getting dimming with no system in last week and i thought my alternator or battery was goin bad but i tightened up connections and things are fine now.

 

[phyphoestilic 5,000+ posts]

drop a Kinetik HC600 in the back and u should be fine.

 

[snoopdan 5,000+ posts]

A buddy of mine competes with his Tahoe with a stock alternator and 4 powerbass 3000's on it, ...he of course has a few batteries extra, but I remember when he was only using 2 batteries and his dimming wasnt real bad..... so I suspect perhaps a bad cell in your battery. You dont necessairly have to buy some $250 battery to fix it, just get one of those $50 walmat battery replacements and see how that helps....if all the problem is was a bad cell, then you're golden.

 

[Thnking 10+ year member]

Sup guys. Something doesnt seem right to me here. I have a Tahoe, stock 100A alt. and a hifonics BX1500D. Now, dimming is REDICULOUS in my truck. Like... below 12v low. I dont understand it either. I have the stock batt. and the big 3 done. But my question is, does the power wire itself have anything to do with it? Its not really high quality wire, but its also only 4 gauge. Would a run of 0/1 be a better choice to stop the dimming? I dont think i need a HO alt w/ only a bx1500d do i? Any ideas.... lemme know!
Thanks!

Bradd

There are voltage drops on any resistance in the wiring schematic, which means any wire/grounding point/connection point.

Check all of you grounding resistances, a 2ga or 1/0ga would be a better choice, for the power wire.

You may need a larger alternator, but if you minimize the grounding resistances, and have the wire large enough, you'll have less dimming issues.

 

[E46_4me]

bigger alternator