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<blockquote data-quote="bananapehl777" data-source="post: 8920682" data-attributes="member: 679217">Big 3 was done when I first got the system installed.I would like to report that the dedicated ground between the two batteries did not fully help the issue. The voltage was still very easy to drop during any bass note if played at full volume. This is was observed by the fact that all lights in the car would literally &quot;strobe&quot; to the bass notes. My Accessport also would easily see voltages dipping down to the high 12s for split seconds even if my engine speed was &gt;1500 RPM. It was my hunch that these system voltage fluctuations, caused by that current hungry sub amp, were messing with the automatic transmission shifting as I mentioned originally. Because again, they never happened if music wasn&#039;t loud.I did solve this issue permanently though. Two weeks ago I installed an XS Power SB650 super cap bank in place of the rear D3400, right near the sub amp. This cap can easily give the amp the current it needs as quick as it needs it, so system voltage remains very steady.&nbsp; IT MADE A WOLRD OF DIFFERENCE. No more strobing headlights, no more transmission issues when stopping or going from a light, voltage on my Accessport never dips below 13.8, and it doesn&#039;t even fluctuate much at all when heavy, separate bass notes are played. I finally have confidence in my electrical system after like 6 years of having it.[ATTACH=full]70699[/ATTACH]Next project is sound treatment with Resonix, which is proving to be quite the task <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite12" alt="o_O" title="Er... what?&nbsp; &nbsp; o_O" loading="lazy" data-shortname="o_O" />. Hence why I have not put too much effort into the wiring organization back there, everything will be coming out.</blockquote>

[QUOTE="bananapehl777, post: 8920682, member: 679217"] Big 3 was done when I first got the system installed. I would like to report that the dedicated ground between the two batteries did not fully help the issue. The voltage was still very easy to drop during any bass note if played at full volume. This is was observed by the fact that all lights in the car would literally "strobe" to the bass notes. My Accessport also would easily see voltages dipping down to the high 12s for split seconds even if my engine speed was >1500 RPM. It was my hunch that these system voltage fluctuations, caused by that current hungry sub amp, were messing with the automatic transmission shifting as I mentioned originally. Because again, they never happened if music wasn't loud. I did solve this issue permanently though. Two weeks ago I installed an XS Power SB650 super cap bank in place of the rear D3400, right near the sub amp. This cap can easily give the amp the current it needs as quick as it needs it, so system voltage remains very steady. IT MADE A WOLRD OF DIFFERENCE. No more strobing headlights, no more transmission issues when stopping or going from a light, voltage on my Accessport never dips below 13.8, and it doesn't even fluctuate much at all when heavy, separate bass notes are played. I finally have confidence in my electrical system after like 6 years of having it. [ATTACH type="full" alt="20260205_235338 (1).jpg"]70699[/ATTACH] Next project is sound treatment with Resonix, which is proving to be quite the task o_O. Hence why I have not put too much effort into the wiring organization back there, everything will be coming out. [/QUOTE]

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