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Car Audio Help
Wiring, Electrical & Installation
Do I need a HO Alternator?
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<blockquote data-quote="GHOSTOWLGRID" data-source="post: 7966529" data-attributes="member: 647694"><p>Well it depends, lets explore:</p><p></p><p>1) You have one 12 volt battery with enough juice to run your audio with car running for at least 15-30 minutes, then your car can't hold a charge anymore.</p><p></p><p>2) You have two 12 volt batteries with enough juice to run around an hour or so. Then your car can't hold the charge anymore.</p><p></p><p>Really your better off buying a higher output alternator. Because an extra battery just prolongs the inevitable when the cars current alternator can not keep up with the loads.</p><p></p><p>Easiest way I suggest is to find a higher output alternator that your cars manufacturer makes, and one thats closest to the vehicle, then modify and custom mount it properly.</p><p></p><p>I own a 1996 Beretta, I run 500 watts of lights, then the AC which runs 2 engine cooling fans and then the cabin fan, then the audio system pulls quite a bit.</p><p></p><p>I had 105 amp alternator and my battery died 10 miles later.</p><p></p><p>After I made a bracket mod, I installed the 3400 v6 140 Amp alternator on my 3100 v6 and now it works just fine. But I had to figure out the wiring to turn it on.</p><p></p><p>Just shows that if your willing to turn your electronics off and let it charge up a bit, then you can get away with the extra battery.</p><p></p><p>But A higher output alternator is the best choice. Your car battery will also last longer as well, and you won't have to worry about not having enough to restart the car later.</p></blockquote><p></p>
[QUOTE="GHOSTOWLGRID, post: 7966529, member: 647694"] Well it depends, lets explore: 1) You have one 12 volt battery with enough juice to run your audio with car running for at least 15-30 minutes, then your car can't hold a charge anymore. 2) You have two 12 volt batteries with enough juice to run around an hour or so. Then your car can't hold the charge anymore. Really your better off buying a higher output alternator. Because an extra battery just prolongs the inevitable when the cars current alternator can not keep up with the loads. Easiest way I suggest is to find a higher output alternator that your cars manufacturer makes, and one thats closest to the vehicle, then modify and custom mount it properly. I own a 1996 Beretta, I run 500 watts of lights, then the AC which runs 2 engine cooling fans and then the cabin fan, then the audio system pulls quite a bit. I had 105 amp alternator and my battery died 10 miles later. After I made a bracket mod, I installed the 3400 v6 140 Amp alternator on my 3100 v6 and now it works just fine. But I had to figure out the wiring to turn it on. Just shows that if your willing to turn your electronics off and let it charge up a bit, then you can get away with the extra battery. But A higher output alternator is the best choice. Your car battery will also last longer as well, and you won't have to worry about not having enough to restart the car later. [/QUOTE]
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Do I need a HO Alternator?
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