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Message: <blockquote data-quote="Winston_Smith" data-source="post: 1362939" data-attributes="member: 565239">So i've just installed an Alpine 9847 and a JBL BP600.1. When i turn it up to a normal listening level, the insde lights, dash lights and trunk lights start to dim pretty good every time the bass hits. Now my head lights dont seem to dim to much. The car has a 75Amp Alternator.Now i measured the voltage at my amp, when the bass hits hard it dips down to 13.5. I've not seen it go lower then this. Also i've measured the resistence of my amp ground, from the amp to the neg on the battery, and it comes out to 00.3Ohms.What i'm woundering is this, will doing the big 3 be enough? or am i going to need a new alternator? Cause at this time i would really like to not have to buy a new alternator.</blockquote>

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