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<blockquote data-quote="toaster" data-source="post: 1225222" data-attributes="member: 563452">ummm.&nbsp; do the math....how does an amp get voltage?&nbsp; from the power cable going to the battery.&nbsp; where does the battery get it&#039;s suppy?&nbsp; from the alt.&nbsp; so, if youre pulling 60 amps from the battery to your amp, then the alt is getting 60 amps pulled from it.golden fact #1:&nbsp; the battery does NOTHING while the engine is running and the alt is spinning.&nbsp; NO-THING.&nbsp; when the engine is on, the alt is supplying all the voltage requirements for the vehicle.now, add in youre running the ac or heater, plus vehicles ign system, plus lights and head lights, youre approaching 100 amps.&nbsp; now, lets say you turn your stereo up to impress someone or show off with a 40 hz sine wave, add in another 100 amps being pulled from your alt.so, 100-200 amps being pulled thru the shizity little factory 6-8 ga charging lead from the alt to the bat.&nbsp; it will work for a little while, but heres what you run into:the first thing that will drop is your voltage.&nbsp; when you arent getting enough voltage to supply your various equipment, current consumption increases DRAMATICALLY.&nbsp; this causes heat buildup.&nbsp; heat is the worst enemy of electronic devices, normally.finally, to my first point:&nbsp; so you think you did good by running 1/0 cable from your bat to your amp.&nbsp; ok.&nbsp; while your engine is running, what you REALLY did was run that 1/0 to your bats factory 8 ga charging lead, then 8ga to the alt.&nbsp; so its just like running 8 ga of wire for 4-5 feet or so, then spliced it with 1/0 to your amp.&nbsp; anyone see a problem with that?to save time and typing, apply that same principle to your ground cable.you must do them both to see a benefit, as it doesnt matter if you upgrade the alt to bat charging lead; if you dont give that voltage a big enough ground, its still choked, and you will still heat up, pull too much current, and have dimming headlights.hope that helps.</blockquote>

[QUOTE="toaster, post: 1225222, member: 563452"] ummm. do the math.... how does an amp get voltage? from the power cable going to the battery. where does the battery get it's suppy? from the alt. so, if youre pulling 60 amps from the battery to your amp, then the alt is getting 60 amps pulled from it. golden fact #1: the battery does NOTHING while the engine is running and the alt is spinning. NO-THING. when the engine is on, the alt is supplying all the voltage requirements for the vehicle. now, add in youre running the ac or heater, plus vehicles ign system, plus lights and head lights, youre approaching 100 amps. now, lets say you turn your stereo up to impress someone or show off with a 40 hz sine wave, add in another 100 amps being pulled from your alt. so, 100-200 amps being pulled thru the shizity little factory 6-8 ga charging lead from the alt to the bat. it will work for a little while, but heres what you run into: the first thing that will drop is your voltage. when you arent getting enough voltage to supply your various equipment, current consumption increases DRAMATICALLY. this causes heat buildup. heat is the worst enemy of electronic devices, normally. finally, to my first point: so you think you did good by running 1/0 cable from your bat to your amp. ok. while your engine is running, what you REALLY did was run that 1/0 to your bats factory 8 ga charging lead, then 8ga to the alt. so its just like running 8 ga of wire for 4-5 feet or so, then spliced it with 1/0 to your amp. anyone see a problem with that? to save time and typing, apply that same principle to your ground cable. you must do them both to see a benefit, as it doesnt matter if you upgrade the alt to bat charging lead; if you dont give that voltage a big enough ground, its still choked, and you will still heat up, pull too much current, and have dimming headlights. hope that helps. [/QUOTE]

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