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<blockquote data-quote="Arythael" data-source="post: 7750923" data-attributes="member: 640311">I&#039;m pretty new to the car audio scene, and I&#039;ve just recently finished installing the front stage of my first build - CDT CL-61 6.5&quot; components on an MB Quart ONX4.80 amplifier, pushing 320W x 2 @ 4 Ohms bridged - but I&#039;m nervous about my current ground. I drive a 2003 Nissan Maxima, and I&#039;ve come to the conclusion that the entire (stock) grounding circuit is pathetic.In order to find a ground, I connected some spare wire (tested for 0 resistance over its length) from my neg. battery post to my trunk, stuck a DMM lead in the trunk end of the wire, and used the other lead to search for a good ground in my trunk. I must have checked every single piece of exposed metal and every single bolt/screw there, and they all ****! The lowest resistance I could find was 3.4 ohms on a bolt (which my amp is currently grounded to).After discovering this, I checked the main battery ground and found 1.2 ohms in the wire about an inch from the neg. battery post and 2.0 ohms at the chassis end of the wire. Is this normal on stock electrical?I&#039;ve had a Big 3 Upgrade on my to-do list since I first started looking into upgrading my car&#039;s audio system, and it&#039;s that much more urgent after coming across this... but how safe is it in the meantime? My amp gets fairly hot, but not burning hot and it hasn&#039;t gone into protection yet. Any opinions or advice?</blockquote>

[QUOTE="Arythael, post: 7750923, member: 640311"] I'm pretty new to the car audio scene, and I've just recently finished installing the front stage of my first build - CDT CL-61 6.5" components on an MB Quart ONX4.80 amplifier, pushing 320W x 2 @ 4 Ohms bridged - but I'm nervous about my current ground. I drive a 2003 Nissan Maxima, and I've come to the conclusion that the entire (stock) grounding circuit is pathetic. In order to find a ground, I connected some spare wire (tested for 0 resistance over its length) from my neg. battery post to my trunk, stuck a DMM lead in the trunk end of the wire, and used the other lead to search for a good ground in my trunk. I must have checked every single piece of exposed metal and every single bolt/screw there, and they all ****! The lowest resistance I could find was 3.4 ohms on a bolt (which my amp is currently grounded to). After discovering this, I checked the main battery ground and found 1.2 ohms in the wire about an inch from the neg. battery post and 2.0 ohms at the chassis end of the wire. Is this normal on stock electrical? I've had a Big 3 Upgrade on my to-do list since I first started looking into upgrading my car's audio system, and it's that much more urgent after coming across this... but how safe is it in the meantime? My amp gets fairly hot, but not burning hot and it hasn't gone into protection yet. Any opinions or advice? [/QUOTE]

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