question about grounding a hu

[jrwalte 10+ year member]

An ohm test for resistance through your chassis will never tell you how much current your chassis can handle before the resistance increases and drops your voltage under load. In my 07 Corolla my chassis couldn't handle my system at around 1900RMS. Only way to find out is try and see how your voltage is while playing loud. But if you're willing to buy the extra wire, you might as well run a negative 1/0, because it'll always be better than the chassis.

 

[maddog808 10+ year member]

An ohm test for resistance through your chassis will never tell you how much current your chassis can handle before the resistance increases and drops your voltage under load. In my 07 Corolla my chassis couldn't handle my system at around 1900RMS. Only way to find out is try and see how your voltage is while playing loud. But if you're willing to buy the extra wire, you might as well run a negative 1/0, because it'll always be better than the chassis.

That's what I figured. For additional $25 - $50, I get the best voltage and don't have to worry about drilling into a gas tank. How about the CCA wire? Good enough, or should I spend double on the pure oxygen free copper?