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<blockquote data-quote="Raven" data-source="post: 1135439" data-attributes="member: 558368">Take no offense, but you really sound n00b-ish.ANYWAY, a ground loop is NOT a problem to be taken care of with something that goes in the RCA line. A ground loop isolation basically nurfs what it thinks is a ground loop. Sometimes it is, sometimes it isn&#039;t. This is my experience.Alternator whine is usually the sign of a bad ground. Do a search. It is also a reason behind dimming lights, output loss, and high heat output. Long story short, take tomorrow and go over every power connection in your vehicle. The HU, any processors, the capacitors, the amps, the big 3, everything. If one is poorly done, you will have alternator whine.And you might want to consider losing the capacitors. If you don&#039;t have the charging system to support the amps, then the caps are doing more harm than good.Oh, and I should also mention I run just about the same amount of power in my setup, and off a 90 amp stock alternator I have no problems with dimming lights or detectable voltage drops. A new alternator could be less than a need.</blockquote>

[QUOTE="Raven, post: 1135439, member: 558368"] Take no offense, but you [I]really[/I] sound n00b-ish. ANYWAY, a ground loop is NOT a problem to be taken care of with something that goes in the RCA line. A ground loop isolation basically nurfs what it thinks is a ground loop. Sometimes it is, sometimes it isn't. This is my experience. [B]Alternator whine is usually the sign of a bad ground.[/B] Do a search. It is also a reason behind dimming lights, output loss, and high heat output. Long story short, take tomorrow and go over every power connection in your vehicle. The HU, any processors, the capacitors, the amps, the big 3, everything. If [I]one[/I] is poorly done, you will have alternator whine. And you might want to consider losing the capacitors. If you don't have the charging system to support the amps, then the caps are doing more harm than good. Oh, and I should also mention I run just about the same amount of power in my setup, and off a 90 amp stock alternator I have no problems with dimming lights or detectable voltage drops. A new alternator could be less than a need. [/QUOTE]

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